/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-cav19/array_tiling_tcpy.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 17:31:43,865 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 17:31:43,868 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 17:31:43,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 17:31:43,891 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 17:31:43,892 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 17:31:43,893 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 17:31:43,895 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 17:31:43,897 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 17:31:43,898 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 17:31:43,899 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 17:31:43,900 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 17:31:43,900 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 17:31:43,901 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 17:31:43,902 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 17:31:43,903 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 17:31:43,904 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 17:31:43,905 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 17:31:43,906 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 17:31:43,908 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 17:31:43,910 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 17:31:43,911 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 17:31:43,912 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 17:31:43,913 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 17:31:43,915 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 17:31:43,916 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 17:31:43,916 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 17:31:43,917 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 17:31:43,917 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 17:31:43,918 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 17:31:43,918 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 17:31:43,919 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 17:31:43,920 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 17:31:43,920 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 17:31:43,921 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 17:31:43,922 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 17:31:43,922 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 17:31:43,922 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 17:31:43,923 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 17:31:43,923 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 17:31:43,924 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 17:31:43,925 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 17:31:43,947 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 17:31:43,947 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 17:31:43,948 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 17:31:43,949 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 17:31:43,949 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 17:31:43,949 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 17:31:43,949 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 17:31:43,949 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 17:31:43,950 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 17:31:43,950 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 17:31:43,950 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 17:31:43,950 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 17:31:43,950 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 17:31:43,951 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 17:31:43,951 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 17:31:43,951 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 17:31:43,951 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 17:31:43,951 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 17:31:43,951 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 17:31:43,952 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 17:31:43,952 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 17:31:43,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 17:31:43,952 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 17:31:43,953 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 17:31:43,953 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 17:31:43,953 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 17:31:43,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 17:31:43,953 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 17:31:43,953 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 17:31:43,954 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 17:31:44,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 17:31:44,293 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 17:31:44,296 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 17:31:44,297 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 17:31:44,298 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 17:31:44,298 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-cav19/array_tiling_tcpy.c [2020-10-14 17:31:44,368 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ec9ef033/ef92132b50f84be9b4017c38c89a863d/FLAGce5572619 [2020-10-14 17:31:44,796 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 17:31:44,796 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-cav19/array_tiling_tcpy.c [2020-10-14 17:31:44,804 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ec9ef033/ef92132b50f84be9b4017c38c89a863d/FLAGce5572619 [2020-10-14 17:31:45,197 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ec9ef033/ef92132b50f84be9b4017c38c89a863d [2020-10-14 17:31:45,207 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 17:31:45,210 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 17:31:45,211 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 17:31:45,212 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 17:31:45,215 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 17:31:45,216 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:31:45" (1/1) ... [2020-10-14 17:31:45,220 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f80c2a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:31:45, skipping insertion in model container [2020-10-14 17:31:45,220 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:31:45" (1/1) ... [2020-10-14 17:31:45,229 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 17:31:45,246 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 17:31:45,445 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 17:31:45,449 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 17:31:45,492 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 17:31:45,507 INFO L208 MainTranslator]: Completed translation [2020-10-14 17:31:45,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:31:45 WrapperNode [2020-10-14 17:31:45,508 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 17:31:45,508 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 17:31:45,508 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 17:31:45,509 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 17:31:45,594 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:31:45" (1/1) ... [2020-10-14 17:31:45,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:31:45" (1/1) ... [2020-10-14 17:31:45,601 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:31:45" (1/1) ... [2020-10-14 17:31:45,601 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:31:45" (1/1) ... [2020-10-14 17:31:45,613 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:31:45" (1/1) ... [2020-10-14 17:31:45,617 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:31:45" (1/1) ... [2020-10-14 17:31:45,619 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:31:45" (1/1) ... [2020-10-14 17:31:45,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 17:31:45,621 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 17:31:45,621 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 17:31:45,622 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 17:31:45,622 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:31:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 17:31:45,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 17:31:45,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 17:31:45,684 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 17:31:45,684 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 17:31:45,684 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 17:31:45,684 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 17:31:45,684 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 17:31:45,684 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 17:31:45,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 17:31:45,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 17:31:45,685 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 17:31:45,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 17:31:45,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 17:31:45,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 17:31:45,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 17:31:45,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 17:31:45,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 17:31:45,954 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 17:31:45,955 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-14 17:31:45,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:31:45 BoogieIcfgContainer [2020-10-14 17:31:45,959 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 17:31:45,960 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 17:31:45,960 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 17:31:45,963 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 17:31:45,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:31:45" (1/3) ... [2020-10-14 17:31:45,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38b3fb80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:31:45, skipping insertion in model container [2020-10-14 17:31:45,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:31:45" (2/3) ... [2020-10-14 17:31:45,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38b3fb80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:31:45, skipping insertion in model container [2020-10-14 17:31:45,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:31:45" (3/3) ... [2020-10-14 17:31:45,966 INFO L109 eAbstractionObserver]: Analyzing ICFG array_tiling_tcpy.c [2020-10-14 17:31:45,976 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 17:31:45,981 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 17:31:45,993 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 17:31:46,012 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 17:31:46,012 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 17:31:46,012 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 17:31:46,012 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 17:31:46,013 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 17:31:46,013 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 17:31:46,013 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 17:31:46,013 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 17:31:46,030 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-10-14 17:31:46,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 17:31:46,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:31:46,035 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:31:46,036 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:31:46,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:31:46,042 INFO L82 PathProgramCache]: Analyzing trace with hash 2005819169, now seen corresponding path program 1 times [2020-10-14 17:31:46,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:31:46,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1892140446] [2020-10-14 17:31:46,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:31:46,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:46,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:46,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:46,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:46,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 17:31:46,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:31:46,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-10-14 17:31:46,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:46,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:46,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 17:31:46,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:31:46,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 17:31:46,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 17:31:46,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:31:46,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:46,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:46,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:46,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:31:46,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:46,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 17:31:46,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:46,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:46,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:31:46,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:46,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:31:46,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:46,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:31:46,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:46,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:46,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:46,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:46,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:31:46,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:31:46,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 17:31:46,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:46,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:46,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:31:46,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:46,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:31:46,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:46,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:31:46,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1892140446] [2020-10-14 17:31:46,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 17:31:46,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 17:31:46,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371350068] [2020-10-14 17:31:46,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 17:31:46,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:31:46,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 17:31:46,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 17:31:46,624 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 6 states. [2020-10-14 17:31:46,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:31:46,837 INFO L93 Difference]: Finished difference Result 62 states and 80 transitions. [2020-10-14 17:31:46,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 17:31:46,840 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-10-14 17:31:46,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:31:46,849 INFO L225 Difference]: With dead ends: 62 [2020-10-14 17:31:46,850 INFO L226 Difference]: Without dead ends: 31 [2020-10-14 17:31:46,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 17:31:46,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-14 17:31:46,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2020-10-14 17:31:46,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-14 17:31:46,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-10-14 17:31:46,898 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 19 [2020-10-14 17:31:46,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:31:46,898 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-10-14 17:31:46,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 17:31:46,899 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-10-14 17:31:46,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 17:31:46,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:31:46,900 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:31:46,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 17:31:46,900 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:31:46,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:31:46,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1462147519, now seen corresponding path program 1 times [2020-10-14 17:31:46,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:31:46,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1132421958] [2020-10-14 17:31:46,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:31:46,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:46,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:47,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:47,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:47,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 17:31:47,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:31:47,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 639 [2020-10-14 17:31:47,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:47,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:47,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 17:31:47,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 17:31:47,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 17:31:47,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 17:31:47,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:31:47,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:47,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:47,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:47,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:31:47,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:47,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 17:31:47,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:47,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:47,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:31:47,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:47,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:31:47,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:47,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:31:47,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:47,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:47,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:47,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:31:47,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:47,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 17:31:47,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:47,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:47,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 17:31:47,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:47,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 17:31:47,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 17:31:47,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:31:47,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1132421958] [2020-10-14 17:31:47,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:31:47,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 17:31:47,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553524961] [2020-10-14 17:31:47,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 17:31:47,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:31:47,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 17:31:47,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-14 17:31:47,731 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 8 states. [2020-10-14 17:31:47,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:31:47,959 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2020-10-14 17:31:47,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 17:31:47,960 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-10-14 17:31:47,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:31:47,961 INFO L225 Difference]: With dead ends: 47 [2020-10-14 17:31:47,961 INFO L226 Difference]: Without dead ends: 36 [2020-10-14 17:31:47,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-10-14 17:31:47,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-14 17:31:47,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2020-10-14 17:31:47,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-14 17:31:47,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-10-14 17:31:47,971 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 21 [2020-10-14 17:31:47,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:31:47,971 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-10-14 17:31:47,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 17:31:47,972 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-10-14 17:31:47,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-14 17:31:47,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:31:47,973 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:31:47,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 17:31:47,973 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:31:47,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:31:47,974 INFO L82 PathProgramCache]: Analyzing trace with hash -696706977, now seen corresponding path program 2 times [2020-10-14 17:31:47,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:31:47,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1005254935] [2020-10-14 17:31:47,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:31:47,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:48,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:48,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:48,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 17:31:48,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:48,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-14 17:31:48,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:48,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:48,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 17:31:48,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:31:48,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 17:31:48,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:48,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:31:48,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:48,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:48,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:48,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:31:48,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:48,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:31:48,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:48,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:48,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:31:48,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:48,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:31:48,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:48,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:31:48,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:48,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:48,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:48,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:31:48,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:48,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:31:48,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:48,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:48,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:31:48,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:48,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:31:48,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:48,420 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:31:48,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1005254935] [2020-10-14 17:31:48,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:31:48,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 17:31:48,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385268614] [2020-10-14 17:31:48,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 17:31:48,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:31:48,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 17:31:48,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-14 17:31:48,423 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 10 states. [2020-10-14 17:31:48,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:31:48,661 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2020-10-14 17:31:48,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 17:31:48,662 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23 [2020-10-14 17:31:48,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:31:48,663 INFO L225 Difference]: With dead ends: 38 [2020-10-14 17:31:48,664 INFO L226 Difference]: Without dead ends: 36 [2020-10-14 17:31:48,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-10-14 17:31:48,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-14 17:31:48,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-10-14 17:31:48,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-14 17:31:48,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2020-10-14 17:31:48,673 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 23 [2020-10-14 17:31:48,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:31:48,674 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2020-10-14 17:31:48,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 17:31:48,674 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2020-10-14 17:31:48,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 17:31:48,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:31:48,675 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:31:48,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 17:31:48,676 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:31:48,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:31:48,676 INFO L82 PathProgramCache]: Analyzing trace with hash 526973714, now seen corresponding path program 1 times [2020-10-14 17:31:48,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:31:48,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [397245863] [2020-10-14 17:31:48,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:31:48,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:48,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:48,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:48,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 17:31:48,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:48,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-14 17:31:48,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:48,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:48,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 17:31:48,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:31:48,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 17:31:48,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:49,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:31:49,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:49,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:49,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:49,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:31:49,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:49,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:31:49,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:49,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:49,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:31:49,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:49,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:31:49,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:49,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:31:49,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:49,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:49,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:49,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:31:49,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:49,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:31:49,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:49,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:49,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:31:49,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:49,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:31:49,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:49,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 17:31:49,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:49,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:49,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:49,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:31:49,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:49,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 17:31:49,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:49,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:49,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:31:49,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:49,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:31:49,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:49,098 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 17:31:49,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [397245863] [2020-10-14 17:31:49,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:31:49,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 17:31:49,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583504467] [2020-10-14 17:31:49,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 17:31:49,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:31:49,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 17:31:49,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-14 17:31:49,100 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 11 states. [2020-10-14 17:31:49,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:31:49,493 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2020-10-14 17:31:49,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 17:31:49,494 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2020-10-14 17:31:49,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:31:49,495 INFO L225 Difference]: With dead ends: 47 [2020-10-14 17:31:49,495 INFO L226 Difference]: Without dead ends: 45 [2020-10-14 17:31:49,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-10-14 17:31:49,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-14 17:31:49,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2020-10-14 17:31:49,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-14 17:31:49,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2020-10-14 17:31:49,505 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 31 [2020-10-14 17:31:49,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:31:49,505 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2020-10-14 17:31:49,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 17:31:49,505 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-10-14 17:31:49,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 17:31:49,507 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:31:49,507 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:31:49,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 17:31:49,507 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:31:49,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:31:49,508 INFO L82 PathProgramCache]: Analyzing trace with hash 523270853, now seen corresponding path program 2 times [2020-10-14 17:31:49,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:31:49,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884881241] [2020-10-14 17:31:49,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:31:49,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:49,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:49,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:49,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 17:31:49,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:49,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-14 17:31:49,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:49,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:49,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 17:31:49,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:31:49,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 17:31:49,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:31:50,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:31:50,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:50,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:50,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:50,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:31:50,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:50,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:31:50,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:50,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:50,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:31:50,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:50,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:31:50,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:50,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:31:50,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:50,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:50,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:50,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:31:50,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:50,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:31:50,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:50,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:50,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:31:50,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:50,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:31:50,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:50,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 17:31:50,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:50,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:50,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:50,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:31:50,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:50,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 17:31:50,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:50,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:50,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:31:50,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:50,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:31:50,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:50,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 17:31:50,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:50,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:50,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:50,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:31:50,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:50,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 17:31:50,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:50,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:50,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:31:50,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:50,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:31:50,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:50,173 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 17:31:50,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [884881241] [2020-10-14 17:31:50,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:31:50,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 17:31:50,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130521702] [2020-10-14 17:31:50,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 17:31:50,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:31:50,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 17:31:50,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-10-14 17:31:50,176 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 14 states. [2020-10-14 17:31:50,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:31:50,900 INFO L93 Difference]: Finished difference Result 68 states and 73 transitions. [2020-10-14 17:31:50,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 17:31:50,901 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 39 [2020-10-14 17:31:50,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:31:50,905 INFO L225 Difference]: With dead ends: 68 [2020-10-14 17:31:50,905 INFO L226 Difference]: Without dead ends: 66 [2020-10-14 17:31:50,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2020-10-14 17:31:50,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-14 17:31:50,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 59. [2020-10-14 17:31:50,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-14 17:31:50,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-14 17:31:50,927 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 39 [2020-10-14 17:31:50,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:31:50,928 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-14 17:31:50,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 17:31:50,928 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-14 17:31:50,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 17:31:50,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:31:50,931 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:31:50,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 17:31:50,932 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:31:50,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:31:50,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1426006371, now seen corresponding path program 3 times [2020-10-14 17:31:50,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:31:50,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [702624455] [2020-10-14 17:31:50,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:31:50,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:50,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:51,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:51,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 17:31:51,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:51,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-14 17:31:51,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:51,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:51,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 17:31:51,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:31:51,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 17:31:51,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:51,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:31:51,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:51,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:51,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:51,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:31:51,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:51,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:31:51,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:51,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:51,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:31:51,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:51,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:31:51,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:51,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:31:51,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:51,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:51,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:51,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:31:51,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:51,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:31:51,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:51,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:51,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:31:51,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:51,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:31:51,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:51,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 17:31:51,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:51,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:51,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:51,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:31:51,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:51,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:31:51,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:51,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:51,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:31:51,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:51,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:31:51,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:51,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 17:31:51,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:51,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:51,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:51,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:31:51,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:51,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 17:31:51,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:51,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:51,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:31:51,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:51,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:31:51,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:51,548 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 17:31:51,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [702624455] [2020-10-14 17:31:51,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:31:51,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 17:31:51,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116741506] [2020-10-14 17:31:51,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 17:31:51,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:31:51,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 17:31:51,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-14 17:31:51,576 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 13 states. [2020-10-14 17:31:52,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:31:52,322 INFO L93 Difference]: Finished difference Result 86 states and 94 transitions. [2020-10-14 17:31:52,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 17:31:52,323 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 41 [2020-10-14 17:31:52,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:31:52,325 INFO L225 Difference]: With dead ends: 86 [2020-10-14 17:31:52,325 INFO L226 Difference]: Without dead ends: 84 [2020-10-14 17:31:52,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2020-10-14 17:31:52,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-14 17:31:52,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 61. [2020-10-14 17:31:52,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-14 17:31:52,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions. [2020-10-14 17:31:52,340 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 41 [2020-10-14 17:31:52,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:31:52,341 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 66 transitions. [2020-10-14 17:31:52,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 17:31:52,341 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2020-10-14 17:31:52,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 17:31:52,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:31:52,343 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:31:52,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 17:31:52,343 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:31:52,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:31:52,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1371445377, now seen corresponding path program 4 times [2020-10-14 17:31:52,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:31:52,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [321254763] [2020-10-14 17:31:52,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:31:52,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:52,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:52,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:52,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 17:31:52,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:52,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 406 [2020-10-14 17:31:52,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:52,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:52,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 17:31:52,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:31:52,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 17:31:52,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:53,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:31:53,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:53,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:53,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:53,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:31:53,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:53,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:31:53,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:53,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:53,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:31:53,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:53,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:31:53,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:53,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:31:53,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:53,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:53,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:53,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:31:53,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:53,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:31:53,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:53,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:53,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:31:53,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:53,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:31:53,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:53,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 17:31:53,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:53,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:53,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:53,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:31:53,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:53,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 17:31:53,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:53,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:53,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:31:53,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:53,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:31:53,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:31:53,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 17:31:53,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:53,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:53,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:53,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:31:53,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:53,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 17:31:53,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:53,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:53,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:31:53,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:53,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:31:53,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:53,217 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 24 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 17:31:53,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [321254763] [2020-10-14 17:31:53,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:31:53,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 17:31:53,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695785173] [2020-10-14 17:31:53,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 17:31:53,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:31:53,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 17:31:53,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-10-14 17:31:53,220 INFO L87 Difference]: Start difference. First operand 61 states and 66 transitions. Second operand 14 states. [2020-10-14 17:31:53,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:31:53,978 INFO L93 Difference]: Finished difference Result 94 states and 102 transitions. [2020-10-14 17:31:53,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 17:31:53,978 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 43 [2020-10-14 17:31:53,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:31:53,980 INFO L225 Difference]: With dead ends: 94 [2020-10-14 17:31:53,980 INFO L226 Difference]: Without dead ends: 92 [2020-10-14 17:31:53,981 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2020-10-14 17:31:53,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-14 17:31:53,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 50. [2020-10-14 17:31:53,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-14 17:31:53,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-10-14 17:31:53,990 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 43 [2020-10-14 17:31:53,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:31:53,991 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-10-14 17:31:53,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 17:31:53,991 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-10-14 17:31:53,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 17:31:53,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:31:53,992 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:31:53,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 17:31:53,993 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:31:53,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:31:53,993 INFO L82 PathProgramCache]: Analyzing trace with hash 115513208, now seen corresponding path program 5 times [2020-10-14 17:31:53,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:31:53,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2059276111] [2020-10-14 17:31:53,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:31:54,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:54,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:54,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:54,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 17:31:54,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:54,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-10-14 17:31:54,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:54,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:54,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 17:31:54,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:31:54,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 17:31:54,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:31:54,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:31:54,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:54,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:54,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:54,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:31:54,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:54,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:31:54,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:54,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:54,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:31:54,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:54,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:31:54,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:54,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:31:54,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:54,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:54,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:54,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:31:54,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:54,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:31:54,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:54,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:54,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:31:54,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:54,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:31:54,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:54,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 17:31:54,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:54,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:54,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:54,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:31:54,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:54,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 17:31:54,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:54,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:54,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:31:54,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:54,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:31:54,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:54,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 17:31:54,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:54,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:54,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:54,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:31:54,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:54,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 17:31:54,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:54,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:54,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:31:54,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:54,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:31:54,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:54,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 17:31:54,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:54,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:54,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:54,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:31:54,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:54,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 17:31:54,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:54,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:54,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:31:54,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:54,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:31:54,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:54,817 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 18 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 17:31:54,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2059276111] [2020-10-14 17:31:54,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:31:54,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 17:31:54,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492274668] [2020-10-14 17:31:54,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 17:31:54,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:31:54,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 17:31:54,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2020-10-14 17:31:54,820 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 15 states. [2020-10-14 17:31:55,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:31:55,487 INFO L93 Difference]: Finished difference Result 76 states and 81 transitions. [2020-10-14 17:31:55,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 17:31:55,487 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 47 [2020-10-14 17:31:55,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:31:55,489 INFO L225 Difference]: With dead ends: 76 [2020-10-14 17:31:55,489 INFO L226 Difference]: Without dead ends: 53 [2020-10-14 17:31:55,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2020-10-14 17:31:55,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-14 17:31:55,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2020-10-14 17:31:55,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-14 17:31:55,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2020-10-14 17:31:55,500 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 47 [2020-10-14 17:31:55,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:31:55,500 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2020-10-14 17:31:55,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 17:31:55,500 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2020-10-14 17:31:55,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 17:31:55,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:31:55,501 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:31:55,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 17:31:55,502 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:31:55,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:31:55,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1894236182, now seen corresponding path program 6 times [2020-10-14 17:31:55,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:31:55,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1291841220] [2020-10-14 17:31:55,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:31:55,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:55,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:55,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:55,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 17:31:55,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:55,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 333 [2020-10-14 17:31:55,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:55,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:55,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 17:31:55,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:31:55,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 17:31:55,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:56,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:31:56,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:56,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:56,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:56,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:31:56,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:56,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:31:56,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:56,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:56,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:31:56,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:56,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:31:56,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:56,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:31:56,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:56,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:56,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:56,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:31:56,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:56,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:31:56,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:56,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:56,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:31:56,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:56,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:31:56,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:56,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 17:31:56,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:56,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:56,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:56,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:31:56,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:56,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 17:31:56,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:56,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:56,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:31:56,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:56,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:31:56,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:56,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 17:31:56,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:56,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:56,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:56,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:31:56,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:56,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 17:31:56,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:56,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:56,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:31:56,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:56,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:31:56,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:56,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 17:31:56,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:56,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:56,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:56,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:31:56,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:56,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:31:56,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:56,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:56,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:31:56,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:56,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:31:56,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:31:56,411 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 17:31:56,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1291841220] [2020-10-14 17:31:56,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:31:56,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 17:31:56,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067978280] [2020-10-14 17:31:56,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 17:31:56,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:31:56,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 17:31:56,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-14 17:31:56,418 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand 16 states. [2020-10-14 17:31:57,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:31:57,287 INFO L93 Difference]: Finished difference Result 82 states and 88 transitions. [2020-10-14 17:31:57,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 17:31:57,289 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 49 [2020-10-14 17:31:57,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:31:57,291 INFO L225 Difference]: With dead ends: 82 [2020-10-14 17:31:57,291 INFO L226 Difference]: Without dead ends: 80 [2020-10-14 17:31:57,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=117, Invalid=813, Unknown=0, NotChecked=0, Total=930 [2020-10-14 17:31:57,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-14 17:31:57,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 73. [2020-10-14 17:31:57,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-14 17:31:57,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2020-10-14 17:31:57,322 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 49 [2020-10-14 17:31:57,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:31:57,323 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2020-10-14 17:31:57,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 17:31:57,323 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2020-10-14 17:31:57,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 17:31:57,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:31:57,325 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:31:57,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 17:31:57,327 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:31:57,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:31:57,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1850030388, now seen corresponding path program 7 times [2020-10-14 17:31:57,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:31:57,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1423150344] [2020-10-14 17:31:57,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:31:57,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:57,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:57,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:57,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-14 17:31:57,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:57,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-10-14 17:31:57,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:57,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:57,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 17:31:57,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:31:57,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 17:31:57,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:58,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:31:58,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:58,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:58,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:58,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:31:58,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:58,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:31:58,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:58,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:58,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:31:58,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:58,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:31:58,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:58,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:31:58,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:58,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:58,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:58,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:31:58,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:58,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:31:58,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:58,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:58,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:31:58,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:58,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:31:58,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:58,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 17:31:58,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:58,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:58,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:58,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:31:58,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:58,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:31:58,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:58,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:58,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:31:58,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:58,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:31:58,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:58,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 17:31:58,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:58,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:58,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:58,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:31:58,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:58,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 17:31:58,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:58,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:58,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:31:58,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:58,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:31:58,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:58,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 17:31:58,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:58,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:58,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:58,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:31:58,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:58,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 17:31:58,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:58,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:58,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:31:58,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:58,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:31:58,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:58,079 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 6 proven. 34 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 17:31:58,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1423150344] [2020-10-14 17:31:58,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:31:58,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 17:31:58,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937769772] [2020-10-14 17:31:58,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 17:31:58,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:31:58,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 17:31:58,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-14 17:31:58,082 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand 15 states. [2020-10-14 17:31:58,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:31:58,872 INFO L93 Difference]: Finished difference Result 92 states and 98 transitions. [2020-10-14 17:31:58,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 17:31:58,873 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 51 [2020-10-14 17:31:58,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:31:58,875 INFO L225 Difference]: With dead ends: 92 [2020-10-14 17:31:58,875 INFO L226 Difference]: Without dead ends: 90 [2020-10-14 17:31:58,876 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2020-10-14 17:31:58,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-14 17:31:58,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 60. [2020-10-14 17:31:58,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-14 17:31:58,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2020-10-14 17:31:58,887 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 51 [2020-10-14 17:31:58,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:31:58,887 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2020-10-14 17:31:58,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 17:31:58,887 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2020-10-14 17:31:58,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 17:31:58,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:31:58,888 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:31:58,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 17:31:58,889 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:31:58,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:31:58,889 INFO L82 PathProgramCache]: Analyzing trace with hash 220986313, now seen corresponding path program 8 times [2020-10-14 17:31:58,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:31:58,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1627862803] [2020-10-14 17:31:58,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:31:58,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:58,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:59,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:59,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 17:31:59,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:59,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 408 [2020-10-14 17:31:59,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:59,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:59,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 17:31:59,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:31:59,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 17:31:59,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:59,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:31:59,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:59,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:59,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:59,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:31:59,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:59,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:31:59,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:59,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:59,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:31:59,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:59,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:31:59,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:59,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:31:59,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:59,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:59,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:59,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:31:59,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:59,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:31:59,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:59,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:59,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:31:59,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:59,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:31:59,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:59,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 17:31:59,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:59,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:59,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:59,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:31:59,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:59,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:31:59,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:59,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:59,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:31:59,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:59,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:31:59,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:59,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 17:31:59,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:59,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:59,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:59,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:31:59,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:59,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:31:59,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:59,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:59,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:31:59,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:59,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:31:59,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:31:59,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 17:31:59,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:59,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:59,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:59,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:31:59,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:59,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:31:59,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:59,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:59,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:31:59,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:59,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:31:59,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:31:59,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 17:31:59,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:31:59,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:31:59,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:31:59,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:31:59,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:31:59,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:31:59,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:31:59,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:31:59,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:31:59,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:31:59,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:31:59,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:31:59,987 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 8 proven. 41 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 17:31:59,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1627862803] [2020-10-14 17:31:59,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:31:59,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 17:31:59,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709669474] [2020-10-14 17:31:59,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 17:31:59,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:31:59,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 17:31:59,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2020-10-14 17:31:59,990 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand 18 states. [2020-10-14 17:32:01,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:32:01,166 INFO L93 Difference]: Finished difference Result 94 states and 101 transitions. [2020-10-14 17:32:01,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 17:32:01,170 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 57 [2020-10-14 17:32:01,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:32:01,173 INFO L225 Difference]: With dead ends: 94 [2020-10-14 17:32:01,173 INFO L226 Difference]: Without dead ends: 92 [2020-10-14 17:32:01,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=116, Invalid=940, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 17:32:01,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-14 17:32:01,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 85. [2020-10-14 17:32:01,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-14 17:32:01,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 91 transitions. [2020-10-14 17:32:01,188 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 91 transitions. Word has length 57 [2020-10-14 17:32:01,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:32:01,188 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 91 transitions. [2020-10-14 17:32:01,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 17:32:01,188 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 91 transitions. [2020-10-14 17:32:01,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 17:32:01,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:32:01,189 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:32:01,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 17:32:01,190 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:32:01,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:32:01,190 INFO L82 PathProgramCache]: Analyzing trace with hash 369456871, now seen corresponding path program 9 times [2020-10-14 17:32:01,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:32:01,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584986314] [2020-10-14 17:32:01,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:32:01,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:01,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:01,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:01,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 17:32:01,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:01,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 451 [2020-10-14 17:32:01,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:01,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:01,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 17:32:01,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:32:01,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 17:32:01,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:02,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:32:02,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:02,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:02,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:02,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:32:02,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:02,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:02,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:02,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:02,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:02,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:02,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:02,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:02,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:32:02,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:02,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:02,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:02,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:02,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:02,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:32:02,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:02,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:02,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:02,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:02,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:02,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:02,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 17:32:02,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:02,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:02,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:02,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:02,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:02,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 17:32:02,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:02,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:02,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:02,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:02,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:02,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:32:02,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 17:32:02,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:02,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:02,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:02,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:02,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:02,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:32:02,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:02,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:02,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:02,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:02,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:02,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:32:02,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 17:32:02,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:02,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:02,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:02,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:02,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:02,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:32:02,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:02,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:02,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:02,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:02,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:02,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:02,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 17:32:02,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:02,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:02,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:02,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:02,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:02,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:32:02,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:02,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:02,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:02,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:02,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:02,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:02,353 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 8 proven. 48 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 17:32:02,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584986314] [2020-10-14 17:32:02,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:32:02,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 17:32:02,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955032723] [2020-10-14 17:32:02,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 17:32:02,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:32:02,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 17:32:02,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2020-10-14 17:32:02,356 INFO L87 Difference]: Start difference. First operand 85 states and 91 transitions. Second operand 18 states. [2020-10-14 17:32:03,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:32:03,880 INFO L93 Difference]: Finished difference Result 119 states and 131 transitions. [2020-10-14 17:32:03,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 17:32:03,881 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 59 [2020-10-14 17:32:03,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:32:03,883 INFO L225 Difference]: With dead ends: 119 [2020-10-14 17:32:03,883 INFO L226 Difference]: Without dead ends: 117 [2020-10-14 17:32:03,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=129, Invalid=1061, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 17:32:03,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-14 17:32:03,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 87. [2020-10-14 17:32:03,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-14 17:32:03,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 94 transitions. [2020-10-14 17:32:03,898 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 94 transitions. Word has length 59 [2020-10-14 17:32:03,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:32:03,899 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 94 transitions. [2020-10-14 17:32:03,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 17:32:03,899 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 94 transitions. [2020-10-14 17:32:03,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-14 17:32:03,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:32:03,900 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:32:03,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 17:32:03,901 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:32:03,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:32:03,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1315742341, now seen corresponding path program 10 times [2020-10-14 17:32:03,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:32:03,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745059273] [2020-10-14 17:32:03,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:32:03,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:03,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:04,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:04,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 17:32:04,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:04,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 495 [2020-10-14 17:32:04,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:04,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:04,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 17:32:04,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:32:04,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 17:32:04,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:04,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:32:04,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:04,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:04,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:04,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:32:04,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:04,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:04,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:04,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:04,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:04,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:04,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:04,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:04,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:32:04,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:04,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:04,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:04,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:04,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:04,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:04,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:04,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:04,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:04,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:04,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:04,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:04,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 17:32:04,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:04,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:04,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:04,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:04,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:04,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:32:04,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:04,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:04,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:04,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:04,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:04,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:04,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 17:32:04,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:04,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:04,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:04,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:04,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:04,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:32:04,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:04,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:04,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:04,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:04,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:04,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:32:04,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 17:32:04,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:04,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:04,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:04,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:04,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:04,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 17:32:04,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:04,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:04,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:04,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:04,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:04,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:32:04,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 17:32:04,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:04,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:04,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:04,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:04,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:04,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 17:32:04,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:04,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:04,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:04,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:04,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:04,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:32:04,926 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 8 proven. 57 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 17:32:04,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1745059273] [2020-10-14 17:32:04,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:32:04,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 17:32:04,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128731375] [2020-10-14 17:32:04,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 17:32:04,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:32:04,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 17:32:04,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-14 17:32:04,929 INFO L87 Difference]: Start difference. First operand 87 states and 94 transitions. Second operand 17 states. [2020-10-14 17:32:06,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:32:06,079 INFO L93 Difference]: Finished difference Result 107 states and 115 transitions. [2020-10-14 17:32:06,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 17:32:06,079 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 61 [2020-10-14 17:32:06,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:32:06,081 INFO L225 Difference]: With dead ends: 107 [2020-10-14 17:32:06,081 INFO L226 Difference]: Without dead ends: 105 [2020-10-14 17:32:06,082 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=100, Invalid=830, Unknown=0, NotChecked=0, Total=930 [2020-10-14 17:32:06,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-14 17:32:06,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 68. [2020-10-14 17:32:06,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-14 17:32:06,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2020-10-14 17:32:06,093 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 61 [2020-10-14 17:32:06,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:32:06,094 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2020-10-14 17:32:06,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 17:32:06,094 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2020-10-14 17:32:06,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-14 17:32:06,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:32:06,095 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:32:06,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 17:32:06,095 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:32:06,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:32:06,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1763781508, now seen corresponding path program 11 times [2020-10-14 17:32:06,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:32:06,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2054651499] [2020-10-14 17:32:06,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:32:06,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:06,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:06,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:06,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-14 17:32:06,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:06,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 429 [2020-10-14 17:32:06,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:06,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:06,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 17:32:06,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:32:06,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 17:32:06,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:07,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:32:07,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:07,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:07,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:07,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:32:07,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:07,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:07,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:07,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:07,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:07,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:07,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:07,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:07,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:32:07,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:07,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:07,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:07,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:07,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:07,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:07,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:07,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:07,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:07,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:07,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:07,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:07,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 17:32:07,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:07,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:07,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:07,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:07,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:07,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 17:32:07,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:07,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:07,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:07,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:07,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:07,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:07,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 17:32:07,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:07,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:07,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:07,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:07,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:07,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 17:32:07,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:07,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:07,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:07,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:07,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:07,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:07,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 17:32:07,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:07,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:07,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:07,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:07,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:07,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 17:32:07,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:07,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:07,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:07,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:07,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:07,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:07,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 17:32:07,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:07,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:07,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:07,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:07,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:07,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 17:32:07,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:07,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:07,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:07,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:07,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:07,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:07,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 17:32:07,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:07,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:07,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:07,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:07,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:07,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 17:32:07,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:07,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:07,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:07,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:07,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:07,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:07,474 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 50 proven. 19 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-14 17:32:07,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2054651499] [2020-10-14 17:32:07,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:32:07,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 17:32:07,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948224813] [2020-10-14 17:32:07,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 17:32:07,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:32:07,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 17:32:07,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2020-10-14 17:32:07,477 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand 18 states. [2020-10-14 17:32:08,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:32:08,706 INFO L93 Difference]: Finished difference Result 102 states and 109 transitions. [2020-10-14 17:32:08,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 17:32:08,707 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 65 [2020-10-14 17:32:08,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:32:08,708 INFO L225 Difference]: With dead ends: 102 [2020-10-14 17:32:08,708 INFO L226 Difference]: Without dead ends: 71 [2020-10-14 17:32:08,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=147, Invalid=723, Unknown=0, NotChecked=0, Total=870 [2020-10-14 17:32:08,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-14 17:32:08,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2020-10-14 17:32:08,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-14 17:32:08,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2020-10-14 17:32:08,722 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 65 [2020-10-14 17:32:08,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:32:08,722 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2020-10-14 17:32:08,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 17:32:08,723 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2020-10-14 17:32:08,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 17:32:08,723 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:32:08,723 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:32:08,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 17:32:08,724 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:32:08,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:32:08,724 INFO L82 PathProgramCache]: Analyzing trace with hash -133017190, now seen corresponding path program 12 times [2020-10-14 17:32:08,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:32:08,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35672929] [2020-10-14 17:32:08,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:32:08,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:08,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:09,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:09,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 17:32:09,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:09,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 425 [2020-10-14 17:32:09,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:09,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:09,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 17:32:09,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:32:09,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 17:32:09,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:09,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:32:09,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:09,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:09,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:09,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:32:09,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:09,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:09,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:09,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:09,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:09,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:09,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:09,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:09,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:32:09,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:09,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:09,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:09,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:09,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:09,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:09,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:09,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:09,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:09,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:09,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:09,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:09,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 17:32:09,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:09,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:09,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:09,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:09,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:09,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 17:32:09,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:09,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:09,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:09,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:09,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:09,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:09,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 17:32:09,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:09,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:09,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:09,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:09,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:09,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 17:32:09,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:09,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:09,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:09,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:09,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:09,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:32:09,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 17:32:09,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:09,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:09,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:09,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:09,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:09,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 17:32:09,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:09,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:09,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:09,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:09,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:09,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:32:09,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 17:32:09,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:09,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:09,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:09,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:09,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:09,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:32:09,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:09,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:09,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:09,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:09,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:09,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:32:09,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 17:32:09,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:09,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:09,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:09,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:09,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:09,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:32:09,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:09,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:09,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:09,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:09,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:09,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:32:09,949 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 10 proven. 66 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-14 17:32:09,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35672929] [2020-10-14 17:32:09,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:32:09,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 17:32:09,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132980944] [2020-10-14 17:32:09,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 17:32:09,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:32:09,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 17:32:09,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2020-10-14 17:32:09,952 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand 20 states. [2020-10-14 17:32:11,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:32:11,320 INFO L93 Difference]: Finished difference Result 108 states and 116 transitions. [2020-10-14 17:32:11,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 17:32:11,328 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 67 [2020-10-14 17:32:11,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:32:11,330 INFO L225 Difference]: With dead ends: 108 [2020-10-14 17:32:11,330 INFO L226 Difference]: Without dead ends: 106 [2020-10-14 17:32:11,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=134, Invalid=1198, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 17:32:11,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-14 17:32:11,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 99. [2020-10-14 17:32:11,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-14 17:32:11,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 106 transitions. [2020-10-14 17:32:11,362 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 106 transitions. Word has length 67 [2020-10-14 17:32:11,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:32:11,363 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 106 transitions. [2020-10-14 17:32:11,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 17:32:11,363 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 106 transitions. [2020-10-14 17:32:11,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 17:32:11,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:32:11,367 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:32:11,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 17:32:11,367 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:32:11,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:32:11,367 INFO L82 PathProgramCache]: Analyzing trace with hash -631570632, now seen corresponding path program 13 times [2020-10-14 17:32:11,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:32:11,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377553616] [2020-10-14 17:32:11,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:32:11,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:11,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:11,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:11,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 17:32:11,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:11,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 461 [2020-10-14 17:32:11,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:11,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:11,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 17:32:11,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:32:11,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 17:32:11,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:32:12,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:32:12,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:12,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:12,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:12,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:32:12,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:12,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:12,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:12,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:12,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:12,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:12,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:12,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:32:12,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:32:12,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:12,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:12,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:12,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:12,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:12,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:12,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:12,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:12,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:12,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:12,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:12,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:32:12,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 17:32:12,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:12,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:12,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:12,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:12,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:12,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 17:32:12,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:12,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:12,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:12,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:12,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:12,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:32:12,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 17:32:12,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:12,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:12,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:12,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:12,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:12,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 17:32:12,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:12,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:12,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:12,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:12,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:12,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:32:12,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 17:32:12,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:12,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:12,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:12,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:12,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:12,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 17:32:12,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:12,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:12,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:12,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:12,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:12,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:32:12,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 17:32:12,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:12,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:12,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:12,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:12,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:12,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 17:32:12,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:12,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:12,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:12,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:12,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:12,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:32:12,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 17:32:12,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:12,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:12,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:12,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:12,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:12,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 17:32:12,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:12,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:12,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:12,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:12,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:12,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:32:12,661 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 10 proven. 75 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-14 17:32:12,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377553616] [2020-10-14 17:32:12,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:32:12,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 17:32:12,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958009578] [2020-10-14 17:32:12,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 17:32:12,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:32:12,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 17:32:12,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=342, Unknown=0, NotChecked=0, Total=380 [2020-10-14 17:32:12,666 INFO L87 Difference]: Start difference. First operand 99 states and 106 transitions. Second operand 20 states. [2020-10-14 17:32:14,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:32:14,462 INFO L93 Difference]: Finished difference Result 137 states and 151 transitions. [2020-10-14 17:32:14,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 17:32:14,462 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 69 [2020-10-14 17:32:14,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:32:14,465 INFO L225 Difference]: With dead ends: 137 [2020-10-14 17:32:14,465 INFO L226 Difference]: Without dead ends: 135 [2020-10-14 17:32:14,466 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=152, Invalid=1408, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 17:32:14,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-14 17:32:14,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 101. [2020-10-14 17:32:14,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-14 17:32:14,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 109 transitions. [2020-10-14 17:32:14,483 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 109 transitions. Word has length 69 [2020-10-14 17:32:14,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:32:14,484 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 109 transitions. [2020-10-14 17:32:14,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 17:32:14,484 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 109 transitions. [2020-10-14 17:32:14,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 17:32:14,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:32:14,489 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:32:14,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 17:32:14,490 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:32:14,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:32:14,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1294908758, now seen corresponding path program 14 times [2020-10-14 17:32:14,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:32:14,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [312523543] [2020-10-14 17:32:14,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:32:14,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:14,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:14,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:14,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 17:32:14,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:14,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 463 [2020-10-14 17:32:14,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:14,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:14,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 17:32:14,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:32:14,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 17:32:14,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:15,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:32:15,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:15,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:15,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:15,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:32:15,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:15,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:15,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:15,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:15,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:15,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:15,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:15,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:15,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:32:15,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:15,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:15,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:15,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:15,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:15,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:15,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:15,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:15,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:15,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:15,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:15,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:15,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 17:32:15,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:15,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:15,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:15,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:15,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:15,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:15,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:15,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:15,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:15,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:15,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:15,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:15,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 17:32:15,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:15,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:15,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:15,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:15,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:15,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:15,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:15,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:15,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:15,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:15,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:15,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:15,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 17:32:15,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:15,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:15,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:15,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:15,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:15,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:15,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:15,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:15,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:15,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:15,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:15,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:15,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 17:32:15,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:15,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:15,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:15,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:15,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:15,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:15,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:15,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:15,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:15,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:15,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:15,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:15,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 17:32:15,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:15,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:15,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:15,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:15,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:15,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:15,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:15,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:15,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:15,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:15,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:15,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:15,619 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 10 proven. 86 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-14 17:32:15,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [312523543] [2020-10-14 17:32:15,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:32:15,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 17:32:15,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660801244] [2020-10-14 17:32:15,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 17:32:15,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:32:15,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 17:32:15,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-14 17:32:15,621 INFO L87 Difference]: Start difference. First operand 101 states and 109 transitions. Second operand 19 states. [2020-10-14 17:32:17,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:32:17,026 INFO L93 Difference]: Finished difference Result 121 states and 130 transitions. [2020-10-14 17:32:17,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 17:32:17,027 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 71 [2020-10-14 17:32:17,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:32:17,028 INFO L225 Difference]: With dead ends: 121 [2020-10-14 17:32:17,029 INFO L226 Difference]: Without dead ends: 119 [2020-10-14 17:32:17,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=113, Invalid=1077, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 17:32:17,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-14 17:32:17,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 78. [2020-10-14 17:32:17,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-14 17:32:17,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2020-10-14 17:32:17,053 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 71 [2020-10-14 17:32:17,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:32:17,053 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2020-10-14 17:32:17,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 17:32:17,053 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2020-10-14 17:32:17,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-14 17:32:17,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:32:17,054 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:32:17,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 17:32:17,054 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:32:17,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:32:17,055 INFO L82 PathProgramCache]: Analyzing trace with hash 8309069, now seen corresponding path program 15 times [2020-10-14 17:32:17,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:32:17,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680379400] [2020-10-14 17:32:17,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:32:17,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:17,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:17,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:17,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 17:32:17,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:17,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 485 [2020-10-14 17:32:17,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:17,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:17,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 17:32:17,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:32:17,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 17:32:17,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:18,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:32:18,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:18,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:18,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:18,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:32:18,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:18,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:18,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:18,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:18,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:18,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:18,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:18,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:18,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:32:18,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:18,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:18,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:18,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:18,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:18,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:32:18,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:18,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:18,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:18,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:18,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:18,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:18,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 17:32:18,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:18,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:18,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:18,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:18,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:18,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:18,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:18,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:18,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:18,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:18,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:18,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:18,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 17:32:18,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:18,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:18,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:18,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:18,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:18,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:18,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:18,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:18,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:18,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:18,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:18,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:18,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 17:32:18,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:18,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:18,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:18,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:18,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:18,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:18,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:18,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:18,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:18,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:18,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:18,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:18,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 17:32:18,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:18,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:18,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:18,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:18,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:18,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:18,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:18,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:18,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:18,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:18,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:18,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:18,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 17:32:18,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:18,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:18,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:18,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:18,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:18,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:18,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:18,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:18,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:18,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:18,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:18,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:18,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 17:32:18,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:18,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:18,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:18,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:18,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:18,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:18,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:18,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:18,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:18,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:18,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:18,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:18,452 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 12 proven. 88 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-14 17:32:18,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1680379400] [2020-10-14 17:32:18,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:32:18,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 17:32:18,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882446501] [2020-10-14 17:32:18,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 17:32:18,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:32:18,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 17:32:18,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2020-10-14 17:32:18,454 INFO L87 Difference]: Start difference. First operand 78 states and 79 transitions. Second operand 21 states. [2020-10-14 17:32:20,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:32:20,066 INFO L93 Difference]: Finished difference Result 120 states and 129 transitions. [2020-10-14 17:32:20,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 17:32:20,067 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 75 [2020-10-14 17:32:20,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:32:20,068 INFO L225 Difference]: With dead ends: 120 [2020-10-14 17:32:20,068 INFO L226 Difference]: Without dead ends: 118 [2020-10-14 17:32:20,069 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=131, Invalid=1275, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 17:32:20,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-14 17:32:20,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 111. [2020-10-14 17:32:20,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-14 17:32:20,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 119 transitions. [2020-10-14 17:32:20,084 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 119 transitions. Word has length 75 [2020-10-14 17:32:20,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:32:20,084 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 119 transitions. [2020-10-14 17:32:20,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 17:32:20,085 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 119 transitions. [2020-10-14 17:32:20,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-14 17:32:20,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:32:20,085 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:32:20,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 17:32:20,086 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:32:20,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:32:20,086 INFO L82 PathProgramCache]: Analyzing trace with hash -603522837, now seen corresponding path program 16 times [2020-10-14 17:32:20,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:32:20,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711193813] [2020-10-14 17:32:20,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:32:20,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:20,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:20,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:20,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 17:32:20,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:20,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 511 [2020-10-14 17:32:20,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:20,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:20,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 17:32:20,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:32:20,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 17:32:20,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:21,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:32:21,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:21,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:21,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:21,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:32:21,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:21,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:21,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:21,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:21,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:21,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:21,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:21,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:21,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:32:21,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:21,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:21,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:21,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:21,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:21,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 17:32:21,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:21,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:21,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:21,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:21,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:21,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:21,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 17:32:21,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:21,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:21,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:21,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:21,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:21,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 17:32:21,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:21,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:21,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:21,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:21,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:21,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:21,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 17:32:21,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:21,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:21,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:21,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:21,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:21,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:32:21,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:21,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:21,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:21,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:21,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:21,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:21,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 17:32:21,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:21,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:21,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:21,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:21,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:21,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:21,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:21,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:21,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:21,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:21,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:21,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:21,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 17:32:21,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:21,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:21,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:21,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:21,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:21,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:21,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:21,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:21,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:21,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:21,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:21,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:21,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 17:32:21,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:21,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:21,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:21,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:21,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:21,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:32:21,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:21,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:21,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:21,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:21,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:21,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:21,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-14 17:32:21,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:21,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:21,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:21,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:21,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:21,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:21,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:21,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:21,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:21,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:21,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:21,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:32:21,526 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 12 proven. 97 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-14 17:32:21,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711193813] [2020-10-14 17:32:21,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:32:21,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 17:32:21,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913309709] [2020-10-14 17:32:21,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 17:32:21,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:32:21,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 17:32:21,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-10-14 17:32:21,529 INFO L87 Difference]: Start difference. First operand 111 states and 119 transitions. Second operand 22 states. [2020-10-14 17:32:23,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:32:23,573 INFO L93 Difference]: Finished difference Result 153 states and 169 transitions. [2020-10-14 17:32:23,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-14 17:32:23,575 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 77 [2020-10-14 17:32:23,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:32:23,577 INFO L225 Difference]: With dead ends: 153 [2020-10-14 17:32:23,577 INFO L226 Difference]: Without dead ends: 151 [2020-10-14 17:32:23,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=159, Invalid=1647, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 17:32:23,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-14 17:32:23,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 113. [2020-10-14 17:32:23,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-14 17:32:23,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 122 transitions. [2020-10-14 17:32:23,595 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 122 transitions. Word has length 77 [2020-10-14 17:32:23,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:32:23,596 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 122 transitions. [2020-10-14 17:32:23,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 17:32:23,596 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 122 transitions. [2020-10-14 17:32:23,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-14 17:32:23,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:32:23,597 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:32:23,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 17:32:23,597 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:32:23,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:32:23,597 INFO L82 PathProgramCache]: Analyzing trace with hash -163464951, now seen corresponding path program 17 times [2020-10-14 17:32:23,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:32:23,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913998576] [2020-10-14 17:32:23,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:32:23,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:23,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:24,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:24,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 17:32:24,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:24,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 537 [2020-10-14 17:32:24,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:24,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:24,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 17:32:24,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:32:24,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 17:32:24,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:24,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:32:24,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:24,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:24,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:24,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:32:24,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:24,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:24,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:24,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:24,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:24,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:24,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:24,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:24,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:32:24,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:24,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:24,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:24,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:24,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:24,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:32:24,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:24,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:24,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:24,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:24,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:24,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:24,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 17:32:24,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:24,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:24,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:24,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:24,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:24,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:24,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:24,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:24,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:24,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:24,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:24,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:24,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 17:32:24,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:24,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:24,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:24,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:24,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:24,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:24,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:24,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:24,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:24,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:24,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:24,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:32:24,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 17:32:24,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:24,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:24,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:24,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:24,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:24,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:24,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:24,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:24,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:24,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:24,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:24,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:24,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 17:32:24,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:24,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:24,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:24,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:24,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:24,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:24,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:24,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:24,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:24,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:24,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:24,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:24,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 17:32:24,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:24,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:24,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:24,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:24,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:24,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:24,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:24,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:24,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:24,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:24,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:24,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:24,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 17:32:24,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:24,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:24,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:24,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:24,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:24,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 17:32:24,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:24,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:24,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:24,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:24,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:24,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:25,010 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 12 proven. 108 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-14 17:32:25,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913998576] [2020-10-14 17:32:25,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:32:25,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 17:32:25,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243214315] [2020-10-14 17:32:25,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 17:32:25,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:32:25,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 17:32:25,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=420, Unknown=0, NotChecked=0, Total=462 [2020-10-14 17:32:25,012 INFO L87 Difference]: Start difference. First operand 113 states and 122 transitions. Second operand 22 states. [2020-10-14 17:32:27,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:32:27,092 INFO L93 Difference]: Finished difference Result 156 states and 173 transitions. [2020-10-14 17:32:27,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-14 17:32:27,093 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 79 [2020-10-14 17:32:27,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:32:27,095 INFO L225 Difference]: With dead ends: 156 [2020-10-14 17:32:27,095 INFO L226 Difference]: Without dead ends: 154 [2020-10-14 17:32:27,096 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=167, Invalid=1725, Unknown=0, NotChecked=0, Total=1892 [2020-10-14 17:32:27,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-14 17:32:27,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 115. [2020-10-14 17:32:27,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-14 17:32:27,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 125 transitions. [2020-10-14 17:32:27,114 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 125 transitions. Word has length 79 [2020-10-14 17:32:27,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:32:27,115 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 125 transitions. [2020-10-14 17:32:27,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 17:32:27,115 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 125 transitions. [2020-10-14 17:32:27,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-14 17:32:27,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:32:27,116 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:32:27,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 17:32:27,116 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:32:27,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:32:27,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1825368487, now seen corresponding path program 18 times [2020-10-14 17:32:27,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:32:27,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [149276991] [2020-10-14 17:32:27,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:32:27,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:27,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:27,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:27,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 17:32:27,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:27,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 632 [2020-10-14 17:32:27,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:27,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:27,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 17:32:27,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:32:27,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 17:32:27,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:28,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:32:28,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:28,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:28,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:28,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:32:28,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:28,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:28,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:28,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:28,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:28,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:28,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:28,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:28,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:32:28,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:28,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:28,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:28,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:28,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:28,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:32:28,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:28,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:28,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:28,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:28,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:28,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:28,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 17:32:28,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:28,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:28,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:28,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:28,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:28,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:32:28,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:28,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:28,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:28,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:28,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:28,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:32:28,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 17:32:28,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:28,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:28,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:28,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:28,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:28,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:32:28,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:28,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:28,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:28,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:28,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:28,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:32:28,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 17:32:28,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:28,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:28,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:28,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:28,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:28,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:32:28,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:28,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:28,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:28,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:28,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:28,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:32:28,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 17:32:28,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:28,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:28,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:28,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:28,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:28,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:32:28,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:28,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:28,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:28,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:28,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:28,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:32:28,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 17:32:28,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:28,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:28,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:28,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:28,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:28,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:32:28,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:28,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:28,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:28,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:28,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:28,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:32:28,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 17:32:28,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:28,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:28,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:28,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:28,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:28,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:32:28,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:28,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:28,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:28,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:28,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:28,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:32:28,639 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 12 proven. 121 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-14 17:32:28,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [149276991] [2020-10-14 17:32:28,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:32:28,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 17:32:28,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829487447] [2020-10-14 17:32:28,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 17:32:28,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:32:28,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 17:32:28,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-10-14 17:32:28,644 INFO L87 Difference]: Start difference. First operand 115 states and 125 transitions. Second operand 21 states. [2020-10-14 17:32:30,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:32:30,378 INFO L93 Difference]: Finished difference Result 160 states and 178 transitions. [2020-10-14 17:32:30,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 17:32:30,379 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 81 [2020-10-14 17:32:30,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:32:30,381 INFO L225 Difference]: With dead ends: 160 [2020-10-14 17:32:30,381 INFO L226 Difference]: Without dead ends: 158 [2020-10-14 17:32:30,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=118, Invalid=1364, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 17:32:30,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-14 17:32:30,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 117. [2020-10-14 17:32:30,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-14 17:32:30,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 128 transitions. [2020-10-14 17:32:30,402 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 128 transitions. Word has length 81 [2020-10-14 17:32:30,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:32:30,403 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 128 transitions. [2020-10-14 17:32:30,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 17:32:30,403 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 128 transitions. [2020-10-14 17:32:30,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-14 17:32:30,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:32:30,404 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:32:30,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 17:32:30,404 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:32:30,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:32:30,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1482546688, now seen corresponding path program 19 times [2020-10-14 17:32:30,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:32:30,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1265001713] [2020-10-14 17:32:30,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:32:30,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:30,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:30,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:30,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 17:32:30,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:30,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 564 [2020-10-14 17:32:30,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:30,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:30,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 17:32:30,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:32:30,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 17:32:30,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:32,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:32:32,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:32,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:32,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:32,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:32:32,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:32,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:32,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:32,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:32,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:32,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:32,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:32,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:32,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:32:32,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:32,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:32,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:32,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:32,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:32,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:32:32,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:32,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:32,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:32,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:32,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:32,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:32,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 17:32:32,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:32,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:32,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:32,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:32,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:32,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:32:32,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:32,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:32,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:32,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:32,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:32,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:32,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 17:32:32,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:32,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:32,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:32,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:32,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:32,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:32:32,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:32,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:32,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:32,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:32,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:32,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:32,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 17:32:32,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:32,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:32,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:32,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:32,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:32,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:32:32,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:32,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:32,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:32,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:32,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:32,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:32,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 17:32:32,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:32,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:32,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:32,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:32,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:32,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:32:32,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:32,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:32,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:32,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:32,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:32,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:32,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 17:32:32,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:32,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:32,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:32,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:32,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:32,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:32:32,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:32,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:32,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:32,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:32,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:32,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:32,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 17:32:32,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:32,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:32,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:32,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:32,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:32,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:32:32,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:32,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:32,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:32,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:32,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:32,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:32,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-14 17:32:32,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:32,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:32,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:32,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:32,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:32,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:32:32,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:32,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:32,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:32,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:32,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:32,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:32,512 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 98 proven. 30 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-14 17:32:32,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1265001713] [2020-10-14 17:32:32,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:32:32,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 17:32:32,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182646954] [2020-10-14 17:32:32,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 17:32:32,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:32:32,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 17:32:32,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2020-10-14 17:32:32,515 INFO L87 Difference]: Start difference. First operand 117 states and 128 transitions. Second operand 21 states. [2020-10-14 17:32:33,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:32:33,984 INFO L93 Difference]: Finished difference Result 156 states and 174 transitions. [2020-10-14 17:32:33,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 17:32:33,986 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 83 [2020-10-14 17:32:33,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:32:33,988 INFO L225 Difference]: With dead ends: 156 [2020-10-14 17:32:33,988 INFO L226 Difference]: Without dead ends: 117 [2020-10-14 17:32:33,989 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=230, Invalid=1176, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 17:32:33,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-14 17:32:34,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2020-10-14 17:32:34,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-14 17:32:34,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 127 transitions. [2020-10-14 17:32:34,005 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 127 transitions. Word has length 83 [2020-10-14 17:32:34,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:32:34,005 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 127 transitions. [2020-10-14 17:32:34,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 17:32:34,005 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 127 transitions. [2020-10-14 17:32:34,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-14 17:32:34,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:32:34,007 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:32:34,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 17:32:34,007 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:32:34,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:32:34,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1833855685, now seen corresponding path program 20 times [2020-10-14 17:32:34,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:32:34,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [759122394] [2020-10-14 17:32:34,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:32:34,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:34,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:34,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:34,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-14 17:32:34,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:34,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 694 [2020-10-14 17:32:34,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:34,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:34,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 17:32:34,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:32:34,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 17:32:34,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:35,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:32:35,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:35,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:35,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:35,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:32:35,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:35,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:35,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:35,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:35,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:35,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:35,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:35,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:35,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:32:35,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:35,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:35,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:35,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:35,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:35,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:32:35,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:35,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:35,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:35,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:35,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:35,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:35,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 17:32:35,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:35,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:35,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:35,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:35,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:35,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:35,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:35,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:35,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:35,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:35,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:35,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:35,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 17:32:35,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:35,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:35,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:35,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:35,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:35,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:35,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:35,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:35,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:35,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:35,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:35,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:35,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 17:32:35,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:35,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:35,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:35,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:35,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:35,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:35,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:35,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:35,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:35,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:35,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:35,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:35,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 17:32:35,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:35,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:35,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:35,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:35,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:35,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:35,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:35,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:35,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:35,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:35,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:35,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:35,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 17:32:35,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:35,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:35,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:35,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:35,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:35,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:35,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:35,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:35,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:35,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:35,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:35,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:35,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-14 17:32:35,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:35,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:35,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:35,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:35,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:35,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:35,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:35,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:35,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:35,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:35,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:35,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:35,597 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 12 proven. 136 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-14 17:32:35,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [759122394] [2020-10-14 17:32:35,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:32:35,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 17:32:35,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395069401] [2020-10-14 17:32:35,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 17:32:35,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:32:35,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 17:32:35,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=420, Unknown=0, NotChecked=0, Total=462 [2020-10-14 17:32:35,599 INFO L87 Difference]: Start difference. First operand 117 states and 127 transitions. Second operand 22 states. [2020-10-14 17:32:37,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:32:37,467 INFO L93 Difference]: Finished difference Result 167 states and 184 transitions. [2020-10-14 17:32:37,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 17:32:37,469 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 83 [2020-10-14 17:32:37,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:32:37,471 INFO L225 Difference]: With dead ends: 167 [2020-10-14 17:32:37,471 INFO L226 Difference]: Without dead ends: 165 [2020-10-14 17:32:37,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=133, Invalid=1349, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 17:32:37,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-14 17:32:37,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 88. [2020-10-14 17:32:37,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-14 17:32:37,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2020-10-14 17:32:37,485 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 83 [2020-10-14 17:32:37,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:32:37,486 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2020-10-14 17:32:37,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 17:32:37,486 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2020-10-14 17:32:37,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-14 17:32:37,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:32:37,487 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:32:37,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 17:32:37,487 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:32:37,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:32:37,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1048809374, now seen corresponding path program 21 times [2020-10-14 17:32:37,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:32:37,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898190105] [2020-10-14 17:32:37,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:32:37,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:37,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:37,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:37,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 17:32:37,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:37,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 431 [2020-10-14 17:32:37,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:37,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:37,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 17:32:37,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:32:37,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 17:32:37,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:38,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:32:38,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:38,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:38,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:38,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:32:38,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:38,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:38,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:38,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:38,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:38,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:38,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:38,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:38,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:32:38,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:38,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:38,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:38,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:38,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:38,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:32:38,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:38,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:38,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:38,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:38,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:38,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:38,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 17:32:38,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:38,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:38,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:38,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:38,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:38,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:38,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:38,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:38,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:38,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:38,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:38,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:38,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 17:32:38,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:38,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:38,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:38,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:38,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:38,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:38,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:38,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:38,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:38,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:38,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:38,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:38,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 17:32:38,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:38,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:38,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:38,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:38,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:38,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:38,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:38,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:38,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:38,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:38,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:38,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:38,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 17:32:38,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:38,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:38,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:38,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:38,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:38,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:38,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:38,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:38,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:38,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:38,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:38,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:39,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 17:32:39,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:39,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:39,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:39,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:39,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:39,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:39,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:39,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:39,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:39,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:39,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:39,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:39,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-14 17:32:39,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:39,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:39,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:39,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:39,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:39,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:39,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:39,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:39,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:39,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:39,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:39,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:39,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-14 17:32:39,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:39,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:39,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:39,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:39,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:39,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:39,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:39,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:39,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:39,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:39,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:39,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:39,047 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 14 proven. 123 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-14 17:32:39,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898190105] [2020-10-14 17:32:39,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:32:39,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 17:32:39,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386578184] [2020-10-14 17:32:39,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 17:32:39,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:32:39,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 17:32:39,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=461, Unknown=0, NotChecked=0, Total=506 [2020-10-14 17:32:39,049 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand 23 states. [2020-10-14 17:32:41,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:32:41,107 INFO L93 Difference]: Finished difference Result 134 states and 144 transitions. [2020-10-14 17:32:41,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 17:32:41,108 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 85 [2020-10-14 17:32:41,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:32:41,109 INFO L225 Difference]: With dead ends: 134 [2020-10-14 17:32:41,109 INFO L226 Difference]: Without dead ends: 132 [2020-10-14 17:32:41,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=153, Invalid=1653, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 17:32:41,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-14 17:32:41,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 125. [2020-10-14 17:32:41,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-14 17:32:41,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 134 transitions. [2020-10-14 17:32:41,129 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 134 transitions. Word has length 85 [2020-10-14 17:32:41,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:32:41,129 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 134 transitions. [2020-10-14 17:32:41,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 17:32:41,129 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 134 transitions. [2020-10-14 17:32:41,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-14 17:32:41,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:32:41,130 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:32:41,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 17:32:41,131 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:32:41,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:32:41,131 INFO L82 PathProgramCache]: Analyzing trace with hash 839078332, now seen corresponding path program 22 times [2020-10-14 17:32:41,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:32:41,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [971029583] [2020-10-14 17:32:41,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:32:41,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:41,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:41,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:41,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 17:32:41,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:41,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 440 [2020-10-14 17:32:41,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:41,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:41,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 17:32:41,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:32:41,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 17:32:41,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:42,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:32:42,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:42,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:42,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:42,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:32:42,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:42,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:42,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:42,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:42,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:42,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:42,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:42,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:42,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:32:42,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:42,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:42,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:42,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:42,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:42,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:32:42,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:42,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:42,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:42,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:42,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:42,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:42,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 17:32:42,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:42,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:42,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:42,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:42,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:42,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:42,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:42,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:42,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:42,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:42,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:42,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:42,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 17:32:42,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:42,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:42,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:42,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:42,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:42,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:42,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:42,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:42,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:42,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:42,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:42,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:42,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 17:32:42,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:42,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:42,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:42,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:42,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:42,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:42,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:42,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:42,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:42,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:42,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:42,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:42,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 17:32:42,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:42,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:42,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:42,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:42,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:42,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:42,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:42,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:42,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:42,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:42,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:42,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:42,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 17:32:42,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:42,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:42,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:42,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:42,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:42,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:42,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:42,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:42,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:42,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:42,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:42,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:42,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 17:32:42,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:42,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:42,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:42,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:42,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:42,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:42,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:42,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:42,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:42,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:42,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:42,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:42,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 17:32:42,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:42,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:42,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:42,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:42,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:42,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:42,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:42,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:42,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:42,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:42,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:42,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:42,523 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 14 proven. 134 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-14 17:32:42,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [971029583] [2020-10-14 17:32:42,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:32:42,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 17:32:42,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787800184] [2020-10-14 17:32:42,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 17:32:42,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:32:42,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 17:32:42,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=505, Unknown=0, NotChecked=0, Total=552 [2020-10-14 17:32:42,525 INFO L87 Difference]: Start difference. First operand 125 states and 134 transitions. Second operand 24 states. [2020-10-14 17:32:45,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:32:45,083 INFO L93 Difference]: Finished difference Result 171 states and 189 transitions. [2020-10-14 17:32:45,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-14 17:32:45,084 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 87 [2020-10-14 17:32:45,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:32:45,086 INFO L225 Difference]: With dead ends: 171 [2020-10-14 17:32:45,086 INFO L226 Difference]: Without dead ends: 169 [2020-10-14 17:32:45,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=174, Invalid=1988, Unknown=0, NotChecked=0, Total=2162 [2020-10-14 17:32:45,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-14 17:32:45,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 127. [2020-10-14 17:32:45,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-14 17:32:45,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 137 transitions. [2020-10-14 17:32:45,107 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 137 transitions. Word has length 87 [2020-10-14 17:32:45,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:32:45,107 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 137 transitions. [2020-10-14 17:32:45,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 17:32:45,107 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 137 transitions. [2020-10-14 17:32:45,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-14 17:32:45,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:32:45,109 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:32:45,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 17:32:45,109 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:32:45,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:32:45,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1151009882, now seen corresponding path program 23 times [2020-10-14 17:32:45,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:32:45,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981424665] [2020-10-14 17:32:45,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:32:45,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:45,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:45,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:45,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 17:32:45,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:45,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 518 [2020-10-14 17:32:45,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:45,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:45,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 17:32:45,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:32:45,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-14 17:32:45,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:46,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:32:46,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:46,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:46,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:46,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:32:46,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:46,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:46,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:46,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:46,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:46,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:46,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:46,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:46,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:32:46,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:46,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:46,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:46,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:46,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:46,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:32:46,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:46,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:46,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:46,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:46,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:46,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:46,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 17:32:46,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:46,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:46,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:46,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:46,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:46,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:46,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:46,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:46,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:46,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:46,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:46,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:46,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 17:32:46,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:46,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:46,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:46,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:46,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:46,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:46,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:46,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:46,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:46,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:46,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:46,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:46,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 17:32:46,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:46,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:46,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:46,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:46,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:46,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 17:32:46,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:46,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:46,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:46,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:46,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:46,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:46,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 17:32:46,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:46,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:46,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:46,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:46,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:46,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:46,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:46,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:46,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:46,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:46,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:46,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:46,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 17:32:46,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:46,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:46,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:46,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:46,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:46,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:46,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:46,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:46,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:46,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:46,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:46,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:46,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 17:32:46,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:46,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:46,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:46,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:46,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:46,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 17:32:46,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:46,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:46,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:46,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:46,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:46,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:46,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 17:32:46,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:46,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:46,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:46,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:46,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:46,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:46,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:46,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:46,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:46,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:46,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:46,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:46,599 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 14 proven. 147 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-14 17:32:46,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981424665] [2020-10-14 17:32:46,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:32:46,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 17:32:46,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982402489] [2020-10-14 17:32:46,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 17:32:46,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:32:46,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 17:32:46,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=506, Unknown=0, NotChecked=0, Total=552 [2020-10-14 17:32:46,601 INFO L87 Difference]: Start difference. First operand 127 states and 137 transitions. Second operand 24 states. [2020-10-14 17:32:49,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:32:49,248 INFO L93 Difference]: Finished difference Result 174 states and 193 transitions. [2020-10-14 17:32:49,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-14 17:32:49,249 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 89 [2020-10-14 17:32:49,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:32:49,252 INFO L225 Difference]: With dead ends: 174 [2020-10-14 17:32:49,252 INFO L226 Difference]: Without dead ends: 172 [2020-10-14 17:32:49,253 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=187, Invalid=2165, Unknown=0, NotChecked=0, Total=2352 [2020-10-14 17:32:49,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-14 17:32:49,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 129. [2020-10-14 17:32:49,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-14 17:32:49,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 140 transitions. [2020-10-14 17:32:49,277 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 140 transitions. Word has length 89 [2020-10-14 17:32:49,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:32:49,278 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 140 transitions. [2020-10-14 17:32:49,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 17:32:49,278 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 140 transitions. [2020-10-14 17:32:49,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-14 17:32:49,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:32:49,279 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:32:49,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 17:32:49,279 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:32:49,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:32:49,280 INFO L82 PathProgramCache]: Analyzing trace with hash 269518712, now seen corresponding path program 24 times [2020-10-14 17:32:49,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:32:49,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780594728] [2020-10-14 17:32:49,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:32:49,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:49,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:49,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:49,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-14 17:32:49,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:49,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 655 [2020-10-14 17:32:49,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:49,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:49,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 17:32:49,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:32:49,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 17:32:49,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:50,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:32:50,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:50,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:50,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:50,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:32:50,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:50,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:50,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:50,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:50,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:50,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:50,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:50,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:50,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:32:50,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:50,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:50,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:50,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:50,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:50,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:32:50,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:50,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:50,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:50,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:50,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:50,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:50,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 17:32:50,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:50,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:50,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:50,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:50,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:50,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:50,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:50,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:50,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:50,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:50,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:50,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:50,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 17:32:50,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:50,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:50,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:50,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:50,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:50,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:50,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:50,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:50,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:50,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:50,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:50,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:50,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 17:32:50,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:50,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:50,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:50,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:50,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:50,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:50,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:50,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:50,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:50,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:50,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:50,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:50,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 17:32:50,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:50,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:50,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:50,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:50,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:50,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:50,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:50,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:50,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:50,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:50,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:50,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:50,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 17:32:50,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:50,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:50,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:50,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:50,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:50,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:50,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:50,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:50,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:50,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:50,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:50,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:50,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-14 17:32:50,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:50,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:50,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:50,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:50,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:50,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:50,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:50,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:50,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:50,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:50,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:50,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:50,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 17:32:50,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:50,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:50,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:50,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:50,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:50,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:50,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:50,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:50,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:50,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:50,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:50,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:50,861 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 14 proven. 162 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-14 17:32:50,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780594728] [2020-10-14 17:32:50,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:32:50,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 17:32:50,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744530951] [2020-10-14 17:32:50,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 17:32:50,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:32:50,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 17:32:50,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=461, Unknown=0, NotChecked=0, Total=506 [2020-10-14 17:32:50,862 INFO L87 Difference]: Start difference. First operand 129 states and 140 transitions. Second operand 23 states. [2020-10-14 17:32:52,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:32:52,934 INFO L93 Difference]: Finished difference Result 150 states and 162 transitions. [2020-10-14 17:32:52,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-14 17:32:52,935 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 91 [2020-10-14 17:32:52,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:32:52,937 INFO L225 Difference]: With dead ends: 150 [2020-10-14 17:32:52,937 INFO L226 Difference]: Without dead ends: 148 [2020-10-14 17:32:52,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=136, Invalid=1586, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 17:32:52,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-14 17:32:52,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 96. [2020-10-14 17:32:52,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-14 17:32:52,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2020-10-14 17:32:52,952 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 91 [2020-10-14 17:32:52,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:32:52,953 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2020-10-14 17:32:52,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 17:32:52,953 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2020-10-14 17:32:52,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-14 17:32:52,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:32:52,953 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:32:52,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 17:32:52,954 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:32:52,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:32:52,954 INFO L82 PathProgramCache]: Analyzing trace with hash 702792529, now seen corresponding path program 25 times [2020-10-14 17:32:52,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:32:52,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [539430424] [2020-10-14 17:32:52,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:32:52,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:52,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:53,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:53,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 17:32:53,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:53,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 494 [2020-10-14 17:32:53,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:53,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:53,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 17:32:53,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:32:53,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 17:32:53,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:54,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:32:54,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:54,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:54,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:54,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:32:54,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:54,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:54,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:54,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:54,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:54,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:54,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:54,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:54,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:32:54,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:54,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:54,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:54,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:54,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:54,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:32:54,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:54,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:54,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:54,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:54,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:54,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:54,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 17:32:54,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:54,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:54,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:54,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:54,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:54,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:54,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:54,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:54,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:54,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:54,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:54,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:54,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 17:32:54,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:54,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:54,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:54,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:54,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:54,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:32:54,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:54,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:54,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:54,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:54,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:54,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:54,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 17:32:54,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:54,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:54,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:54,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:54,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:54,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:54,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:54,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:54,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:54,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:54,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:54,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:54,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 17:32:54,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:54,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:54,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:54,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:54,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:54,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:54,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:54,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:54,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:54,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:54,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:54,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:54,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 17:32:54,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:54,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:54,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:54,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:54,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:54,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:54,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:54,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:54,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:54,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:54,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:54,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:54,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-14 17:32:54,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:54,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:54,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:54,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:54,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:54,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:54,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:54,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:54,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:54,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:54,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:54,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:54,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-14 17:32:54,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:54,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:54,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:54,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:54,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:54,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:54,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:54,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:54,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:54,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:54,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:54,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:54,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 17:32:54,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:54,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:54,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:54,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:54,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:54,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:54,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:54,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:54,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:54,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:54,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:54,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:54,762 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 16 proven. 153 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-14 17:32:54,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [539430424] [2020-10-14 17:32:54,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:32:54,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 17:32:54,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175759590] [2020-10-14 17:32:54,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 17:32:54,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:32:54,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 17:32:54,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=506, Unknown=0, NotChecked=0, Total=552 [2020-10-14 17:32:54,764 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand 24 states. [2020-10-14 17:32:55,475 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2020-10-14 17:32:57,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:32:57,353 INFO L93 Difference]: Finished difference Result 146 states and 157 transitions. [2020-10-14 17:32:57,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-14 17:32:57,358 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 93 [2020-10-14 17:32:57,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:32:57,359 INFO L225 Difference]: With dead ends: 146 [2020-10-14 17:32:57,359 INFO L226 Difference]: Without dead ends: 144 [2020-10-14 17:32:57,360 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=155, Invalid=1825, Unknown=0, NotChecked=0, Total=1980 [2020-10-14 17:32:57,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-14 17:32:57,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 137. [2020-10-14 17:32:57,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-14 17:32:57,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 147 transitions. [2020-10-14 17:32:57,390 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 147 transitions. Word has length 93 [2020-10-14 17:32:57,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:32:57,390 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 147 transitions. [2020-10-14 17:32:57,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 17:32:57,390 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 147 transitions. [2020-10-14 17:32:57,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-14 17:32:57,393 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:32:57,393 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:32:57,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 17:32:57,393 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:32:57,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:32:57,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1787201391, now seen corresponding path program 26 times [2020-10-14 17:32:57,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:32:57,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482680891] [2020-10-14 17:32:57,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:32:57,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:57,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:57,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:57,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 17:32:57,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:57,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 544 [2020-10-14 17:32:57,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:57,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:57,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 17:32:57,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:32:57,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 17:32:57,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:59,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:32:59,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:59,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:59,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:59,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:32:59,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:59,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:59,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:59,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:59,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:59,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:59,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:59,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:59,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:32:59,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:59,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:59,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:59,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:59,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:59,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:32:59,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:59,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:59,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:32:59,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:59,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:32:59,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:59,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 17:32:59,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:59,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:59,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:59,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:59,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:59,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:59,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:59,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:59,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:59,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:59,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:59,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:59,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 17:32:59,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:59,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:59,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:59,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:59,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:59,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:59,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:59,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:59,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:59,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:59,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:59,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:59,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 17:32:59,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:59,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:59,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:59,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:59,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:59,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:59,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:59,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:59,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:59,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:59,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:59,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:59,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 17:32:59,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:59,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:59,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:59,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:59,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:59,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:59,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:59,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:59,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:59,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:59,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:59,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:59,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 17:32:59,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:59,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:59,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:59,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:59,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:59,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:59,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:59,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:59,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:59,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:59,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:59,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:59,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 17:32:59,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:59,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:59,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:59,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:59,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:59,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:59,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:59,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:59,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:59,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:59,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:59,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:59,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 17:32:59,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:59,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:59,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:59,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:59,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:59,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:59,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:59,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:59,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:59,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:59,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:59,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:59,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 17:32:59,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:32:59,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:32:59,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:32:59,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:32:59,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:32:59,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:32:59,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:32:59,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:32:59,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:32:59,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:32:59,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:32:59,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:32:59,234 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 16 proven. 164 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-14 17:32:59,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482680891] [2020-10-14 17:32:59,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:32:59,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 17:32:59,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473658020] [2020-10-14 17:32:59,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 17:32:59,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:32:59,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 17:32:59,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=549, Unknown=0, NotChecked=0, Total=600 [2020-10-14 17:32:59,236 INFO L87 Difference]: Start difference. First operand 137 states and 147 transitions. Second operand 25 states. [2020-10-14 17:32:59,969 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 58 [2020-10-14 17:33:00,183 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-10-14 17:33:01,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:33:01,907 INFO L93 Difference]: Finished difference Result 186 states and 206 transitions. [2020-10-14 17:33:01,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-14 17:33:01,908 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 95 [2020-10-14 17:33:01,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:33:01,910 INFO L225 Difference]: With dead ends: 186 [2020-10-14 17:33:01,910 INFO L226 Difference]: Without dead ends: 184 [2020-10-14 17:33:01,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=163, Invalid=1999, Unknown=0, NotChecked=0, Total=2162 [2020-10-14 17:33:01,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-14 17:33:01,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 139. [2020-10-14 17:33:01,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-14 17:33:01,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 150 transitions. [2020-10-14 17:33:01,938 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 150 transitions. Word has length 95 [2020-10-14 17:33:01,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:33:01,938 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 150 transitions. [2020-10-14 17:33:01,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 17:33:01,939 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 150 transitions. [2020-10-14 17:33:01,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-14 17:33:01,940 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:33:01,940 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:33:01,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 17:33:01,940 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:33:01,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:33:01,941 INFO L82 PathProgramCache]: Analyzing trace with hash 227064845, now seen corresponding path program 27 times [2020-10-14 17:33:01,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:33:01,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [830271208] [2020-10-14 17:33:01,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:33:01,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:01,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:02,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:02,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 17:33:02,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:02,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 651 [2020-10-14 17:33:02,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:02,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:02,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 17:33:02,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:33:02,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 17:33:02,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:03,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:33:03,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:03,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:03,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:03,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:33:03,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:03,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:03,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:03,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:03,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:33:03,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:03,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:33:03,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:33:03,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:33:03,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:03,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:03,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:03,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:03,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:03,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:33:03,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:03,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:03,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:33:03,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:03,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:33:03,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:03,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 17:33:03,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:03,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:03,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:03,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:03,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:03,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:03,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:03,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:03,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:03,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:03,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:03,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:03,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 17:33:03,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:03,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:03,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:03,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:03,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:03,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:03,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:03,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:03,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:03,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:03,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:03,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:03,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 17:33:03,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:03,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:03,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:03,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:03,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:03,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:33:03,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:03,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:03,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:03,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:03,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:03,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:03,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 17:33:03,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:03,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:03,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:03,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:03,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:03,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:03,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:03,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:03,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:03,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:03,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:03,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:03,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 17:33:03,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:03,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:03,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:03,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:03,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:03,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:03,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:03,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:03,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:03,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:03,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:03,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:03,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 17:33:03,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:03,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:03,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:03,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:03,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:03,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:03,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:03,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:03,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:03,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:03,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:03,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:03,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 17:33:03,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:03,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:03,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:03,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:03,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:03,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:03,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:03,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:03,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:03,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:03,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:03,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:03,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-14 17:33:03,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:03,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:03,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:03,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:03,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:03,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:03,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:03,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:03,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:03,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:03,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:03,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:03,815 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 16 proven. 177 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-14 17:33:03,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [830271208] [2020-10-14 17:33:03,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:33:03,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 17:33:03,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902329607] [2020-10-14 17:33:03,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 17:33:03,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:33:03,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 17:33:03,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=599, Unknown=0, NotChecked=0, Total=650 [2020-10-14 17:33:03,816 INFO L87 Difference]: Start difference. First operand 139 states and 150 transitions. Second operand 26 states. [2020-10-14 17:33:06,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:33:06,763 INFO L93 Difference]: Finished difference Result 214 states and 241 transitions. [2020-10-14 17:33:06,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-14 17:33:06,764 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 97 [2020-10-14 17:33:06,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:33:06,766 INFO L225 Difference]: With dead ends: 214 [2020-10-14 17:33:06,766 INFO L226 Difference]: Without dead ends: 212 [2020-10-14 17:33:06,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=170, Invalid=2280, Unknown=0, NotChecked=0, Total=2450 [2020-10-14 17:33:06,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-14 17:33:06,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 141. [2020-10-14 17:33:06,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-14 17:33:06,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 153 transitions. [2020-10-14 17:33:06,792 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 153 transitions. Word has length 97 [2020-10-14 17:33:06,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:33:06,793 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 153 transitions. [2020-10-14 17:33:06,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 17:33:06,793 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 153 transitions. [2020-10-14 17:33:06,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-14 17:33:06,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:33:06,794 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:33:06,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 17:33:06,795 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:33:06,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:33:06,795 INFO L82 PathProgramCache]: Analyzing trace with hash -120569557, now seen corresponding path program 28 times [2020-10-14 17:33:06,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:33:06,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1567074036] [2020-10-14 17:33:06,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:33:06,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:06,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:07,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:07,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 17:33:07,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:07,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 679 [2020-10-14 17:33:07,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:07,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:07,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 17:33:07,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:33:07,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 17:33:07,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:08,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:33:08,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:08,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:08,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:08,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:33:08,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:08,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:08,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:08,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:08,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:33:08,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:08,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:33:08,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:08,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:33:08,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:08,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:08,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:08,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:08,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:08,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:33:08,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:08,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:08,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:33:08,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:08,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:33:08,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:08,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 17:33:08,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:08,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:08,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:08,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:08,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:08,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:33:08,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:08,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:08,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:08,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:08,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:08,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:08,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 17:33:08,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:08,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:08,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:08,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:08,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:08,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:33:08,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:08,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:08,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:08,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:08,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:08,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:08,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 17:33:08,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:08,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:08,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:08,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:08,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:08,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:33:08,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:08,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:08,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:08,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:08,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:08,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:08,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 17:33:08,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:08,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:08,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:08,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:08,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:08,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:08,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:08,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:08,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:08,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:08,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:08,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:08,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 17:33:08,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:08,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:08,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:08,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:08,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:08,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:08,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:08,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:08,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:08,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:08,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:08,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:08,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-14 17:33:08,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:08,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:08,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:08,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:08,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:08,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:08,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:08,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:08,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:08,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:08,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:08,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:08,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 17:33:08,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:08,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:08,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:08,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:08,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:08,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:08,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:08,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:08,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:08,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:08,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:08,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:08,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 17:33:08,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:08,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:08,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:08,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:08,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:08,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:08,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:08,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:08,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:08,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:08,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:08,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:08,654 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 16 proven. 192 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-14 17:33:08,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1567074036] [2020-10-14 17:33:08,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:33:08,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 17:33:08,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595660525] [2020-10-14 17:33:08,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 17:33:08,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:33:08,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 17:33:08,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=600, Unknown=0, NotChecked=0, Total=650 [2020-10-14 17:33:08,655 INFO L87 Difference]: Start difference. First operand 141 states and 153 transitions. Second operand 26 states. [2020-10-14 17:33:11,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:33:11,534 INFO L93 Difference]: Finished difference Result 193 states and 215 transitions. [2020-10-14 17:33:11,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-14 17:33:11,535 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 99 [2020-10-14 17:33:11,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:33:11,537 INFO L225 Difference]: With dead ends: 193 [2020-10-14 17:33:11,538 INFO L226 Difference]: Without dead ends: 191 [2020-10-14 17:33:11,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=197, Invalid=2455, Unknown=0, NotChecked=0, Total=2652 [2020-10-14 17:33:11,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-14 17:33:11,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 143. [2020-10-14 17:33:11,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-14 17:33:11,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 156 transitions. [2020-10-14 17:33:11,565 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 156 transitions. Word has length 99 [2020-10-14 17:33:11,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:33:11,565 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 156 transitions. [2020-10-14 17:33:11,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 17:33:11,566 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 156 transitions. [2020-10-14 17:33:11,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-14 17:33:11,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:33:11,567 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:33:11,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 17:33:11,567 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:33:11,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:33:11,568 INFO L82 PathProgramCache]: Analyzing trace with hash 54170628, now seen corresponding path program 29 times [2020-10-14 17:33:11,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:33:11,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [113905168] [2020-10-14 17:33:11,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:33:11,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:11,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:12,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:12,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 17:33:12,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:12,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 852 [2020-10-14 17:33:12,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:12,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:12,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 17:33:12,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:33:12,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 17:33:12,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:14,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:33:14,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:14,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:14,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:14,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:33:14,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:14,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:14,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:14,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:14,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:33:14,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:14,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:33:14,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:14,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:33:14,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:14,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:14,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:14,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:14,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:14,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:33:14,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:14,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:14,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:33:14,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:14,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:33:14,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:14,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 17:33:14,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:14,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:14,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:14,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:14,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:14,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:33:14,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:14,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:14,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:14,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:14,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:14,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:14,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 17:33:14,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:14,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:14,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:14,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:14,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:14,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:33:14,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:14,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:14,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:14,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:14,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:14,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:14,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 17:33:14,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:14,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:14,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:14,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:14,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:14,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:33:14,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:14,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:14,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:14,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:14,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:14,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:14,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 17:33:14,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:14,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:14,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:14,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:14,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:14,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:33:14,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:14,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:14,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:14,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:14,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:14,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:33:14,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 17:33:14,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:14,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:14,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:14,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:14,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:14,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:33:14,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:14,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:14,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:14,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:14,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:14,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:14,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-14 17:33:14,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:14,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:14,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:14,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:14,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:14,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:33:14,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:14,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:14,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:14,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:14,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:14,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:14,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-14 17:33:14,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:14,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:14,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:14,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:14,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:14,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:33:14,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:14,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:14,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:14,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:14,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:14,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:14,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 17:33:14,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:14,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:14,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:14,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:14,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:14,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:33:14,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:14,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:14,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:14,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:14,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:14,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:14,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-14 17:33:14,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:14,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:14,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:14,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:14,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:14,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:33:14,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:14,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:14,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:14,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:14,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:14,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:14,175 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 130 proven. 75 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-14 17:33:14,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [113905168] [2020-10-14 17:33:14,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:33:14,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 17:33:14,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730051049] [2020-10-14 17:33:14,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 17:33:14,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:33:14,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 17:33:14,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=489, Unknown=0, NotChecked=0, Total=600 [2020-10-14 17:33:14,177 INFO L87 Difference]: Start difference. First operand 143 states and 156 transitions. Second operand 25 states. [2020-10-14 17:33:16,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:33:16,280 INFO L93 Difference]: Finished difference Result 190 states and 212 transitions. [2020-10-14 17:33:16,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-14 17:33:16,281 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 101 [2020-10-14 17:33:16,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:33:16,282 INFO L225 Difference]: With dead ends: 190 [2020-10-14 17:33:16,282 INFO L226 Difference]: Without dead ends: 143 [2020-10-14 17:33:16,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=319, Invalid=1751, Unknown=0, NotChecked=0, Total=2070 [2020-10-14 17:33:16,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-14 17:33:16,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2020-10-14 17:33:16,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-14 17:33:16,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 155 transitions. [2020-10-14 17:33:16,310 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 155 transitions. Word has length 101 [2020-10-14 17:33:16,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:33:16,310 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 155 transitions. [2020-10-14 17:33:16,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 17:33:16,310 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 155 transitions. [2020-10-14 17:33:16,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-14 17:33:16,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:33:16,311 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:33:16,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 17:33:16,312 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:33:16,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:33:16,312 INFO L82 PathProgramCache]: Analyzing trace with hash 810219209, now seen corresponding path program 30 times [2020-10-14 17:33:16,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:33:16,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1773573046] [2020-10-14 17:33:16,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:33:16,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:16,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:17,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:17,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 17:33:17,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:17,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 902 [2020-10-14 17:33:17,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:17,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:17,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 17:33:17,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:33:17,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 17:33:17,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:18,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:33:18,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:18,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:18,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:18,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:33:18,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:18,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:18,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:18,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:18,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:33:18,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:18,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:33:18,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:18,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:33:18,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:18,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:18,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:18,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:18,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:18,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:33:18,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:18,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:18,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:33:18,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:18,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:33:18,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:18,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 17:33:18,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:18,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:18,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:18,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:18,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:18,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:33:18,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:18,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:18,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:18,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:18,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:18,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:18,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 17:33:18,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:18,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:18,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:18,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:18,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:18,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:18,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:18,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:18,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:18,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:18,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:18,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:18,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 17:33:18,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:18,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:18,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:18,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:18,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:18,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:33:18,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:18,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:18,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:18,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:18,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:18,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:18,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 17:33:18,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:18,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:18,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:18,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:18,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:18,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:18,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:18,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:18,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:18,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:18,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:18,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:18,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-14 17:33:18,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:18,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:18,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:18,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:18,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:18,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:18,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:18,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:18,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:18,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:18,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:18,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:18,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-14 17:33:18,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:18,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:18,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:18,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:18,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:18,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:18,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:18,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:18,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:18,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:18,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:18,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:18,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 17:33:18,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:18,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:18,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:18,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:18,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:18,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:18,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:18,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:18,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:18,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:18,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:18,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:18,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-14 17:33:18,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:18,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:18,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:18,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:18,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:18,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:18,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:18,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:18,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:18,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:18,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:18,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:18,421 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 16 proven. 209 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-14 17:33:18,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1773573046] [2020-10-14 17:33:18,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:33:18,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 17:33:18,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987289926] [2020-10-14 17:33:18,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 17:33:18,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:33:18,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 17:33:18,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2020-10-14 17:33:18,422 INFO L87 Difference]: Start difference. First operand 143 states and 155 transitions. Second operand 25 states. [2020-10-14 17:33:21,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:33:21,115 INFO L93 Difference]: Finished difference Result 164 states and 177 transitions. [2020-10-14 17:33:21,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-14 17:33:21,117 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 101 [2020-10-14 17:33:21,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:33:21,118 INFO L225 Difference]: With dead ends: 164 [2020-10-14 17:33:21,119 INFO L226 Difference]: Without dead ends: 162 [2020-10-14 17:33:21,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=147, Invalid=1923, Unknown=0, NotChecked=0, Total=2070 [2020-10-14 17:33:21,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-14 17:33:21,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 106. [2020-10-14 17:33:21,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-14 17:33:21,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 107 transitions. [2020-10-14 17:33:21,139 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 107 transitions. Word has length 101 [2020-10-14 17:33:21,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:33:21,139 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 107 transitions. [2020-10-14 17:33:21,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 17:33:21,139 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 107 transitions. [2020-10-14 17:33:21,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 17:33:21,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:33:21,140 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:33:21,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 17:33:21,140 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:33:21,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:33:21,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1188977186, now seen corresponding path program 31 times [2020-10-14 17:33:21,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:33:21,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890456438] [2020-10-14 17:33:21,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:33:21,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:21,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:21,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:21,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 17:33:21,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:21,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 776 [2020-10-14 17:33:21,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:21,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:21,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 17:33:21,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:33:21,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 17:33:21,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:23,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:33:23,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:23,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:23,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:23,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:33:23,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:23,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:23,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:23,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:23,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:33:23,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:23,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:33:23,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:23,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:33:23,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:23,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:23,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:23,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:23,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:23,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:33:23,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:23,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:23,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:33:23,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:23,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:33:23,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:23,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 17:33:23,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:23,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:23,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:23,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:23,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:23,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:33:23,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:23,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:23,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:23,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:23,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:23,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:23,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 17:33:23,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:23,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:23,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:23,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:23,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:23,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:33:23,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:23,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:23,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:23,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:23,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:23,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:23,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 17:33:23,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:23,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:23,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:23,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:23,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:23,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:33:23,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:23,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:23,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:23,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:23,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:23,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:23,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 17:33:23,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:23,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:23,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:23,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:23,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:23,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:33:23,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:23,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:23,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:23,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:23,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:23,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:23,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 17:33:23,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:23,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:23,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:23,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:23,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:23,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:33:23,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:23,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:23,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:23,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:23,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:23,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:23,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 17:33:23,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:23,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:23,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:23,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:23,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:23,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:23,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:23,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:23,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:23,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:23,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:23,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:23,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 17:33:23,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:23,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:23,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:23,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:23,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:23,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:23,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:23,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:23,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:23,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:23,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:23,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:23,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 17:33:23,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:23,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:23,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:23,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:23,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:23,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:33:23,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:23,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:23,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:23,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:23,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:23,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:23,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 17:33:23,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:23,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:23,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:23,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:23,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:23,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:33:23,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:23,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:23,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:23,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:23,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:23,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:23,576 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 18 proven. 198 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-14 17:33:23,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890456438] [2020-10-14 17:33:23,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:33:23,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 17:33:23,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160217986] [2020-10-14 17:33:23,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 17:33:23,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:33:23,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 17:33:23,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=600, Unknown=0, NotChecked=0, Total=650 [2020-10-14 17:33:23,578 INFO L87 Difference]: Start difference. First operand 106 states and 107 transitions. Second operand 26 states. [2020-10-14 17:33:24,545 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2020-10-14 17:33:27,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:33:27,441 INFO L93 Difference]: Finished difference Result 160 states and 172 transitions. [2020-10-14 17:33:27,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-14 17:33:27,442 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 103 [2020-10-14 17:33:27,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:33:27,442 INFO L225 Difference]: With dead ends: 160 [2020-10-14 17:33:27,443 INFO L226 Difference]: Without dead ends: 158 [2020-10-14 17:33:27,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=177, Invalid=2273, Unknown=0, NotChecked=0, Total=2450 [2020-10-14 17:33:27,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-14 17:33:27,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 151. [2020-10-14 17:33:27,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-14 17:33:27,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 162 transitions. [2020-10-14 17:33:27,467 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 162 transitions. Word has length 103 [2020-10-14 17:33:27,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:33:27,468 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 162 transitions. [2020-10-14 17:33:27,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 17:33:27,468 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 162 transitions. [2020-10-14 17:33:27,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-14 17:33:27,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:33:27,469 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:33:27,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 17:33:27,469 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:33:27,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:33:27,469 INFO L82 PathProgramCache]: Analyzing trace with hash 816386240, now seen corresponding path program 32 times [2020-10-14 17:33:27,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:33:27,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982969383] [2020-10-14 17:33:27,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:33:27,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:27,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:28,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:28,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-14 17:33:28,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:28,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1033 [2020-10-14 17:33:28,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:28,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:28,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 17:33:28,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:33:28,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 17:33:28,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:29,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:33:29,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:29,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:29,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:29,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:33:29,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:29,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:29,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:29,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:29,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:33:29,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:29,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:33:29,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:29,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:33:29,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:29,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:29,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:29,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:29,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:29,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:33:29,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:29,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:29,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:33:29,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:29,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:33:29,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:29,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 17:33:29,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:29,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:29,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:29,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:29,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:29,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:29,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:29,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:29,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:29,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:29,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:29,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:29,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 17:33:29,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:29,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:29,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:29,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:29,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:29,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:29,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:29,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:29,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:29,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:29,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:29,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:29,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 17:33:29,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:29,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:29,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:29,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:29,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:29,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:33:29,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:29,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:29,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:29,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:29,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:29,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:29,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 17:33:29,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:30,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:30,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:30,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:30,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:30,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:30,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:30,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:30,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:30,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:30,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:30,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:30,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 17:33:30,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:30,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:30,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:30,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:30,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:30,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:30,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:30,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:30,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:30,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:30,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:30,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:30,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 17:33:30,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:30,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:30,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:30,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:30,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:30,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:30,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:30,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:30,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:30,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:30,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:30,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:30,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 17:33:30,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:30,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:30,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:30,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:30,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:30,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 17:33:30,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:30,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:30,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:30,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:30,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:30,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:30,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-14 17:33:30,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:30,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:30,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:30,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:30,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:30,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:30,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:30,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:30,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:30,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:30,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:30,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:30,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-14 17:33:30,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:30,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:30,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:30,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:30,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:30,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:30,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:30,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:30,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:30,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:30,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:30,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:30,069 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 18 proven. 211 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-14 17:33:30,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [982969383] [2020-10-14 17:33:30,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:33:30,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 17:33:30,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006763330] [2020-10-14 17:33:30,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 17:33:30,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:33:30,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 17:33:30,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=649, Unknown=0, NotChecked=0, Total=702 [2020-10-14 17:33:30,071 INFO L87 Difference]: Start difference. First operand 151 states and 162 transitions. Second operand 27 states. [2020-10-14 17:33:33,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:33:33,759 INFO L93 Difference]: Finished difference Result 205 states and 227 transitions. [2020-10-14 17:33:33,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-14 17:33:33,760 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 105 [2020-10-14 17:33:33,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:33:33,762 INFO L225 Difference]: With dead ends: 205 [2020-10-14 17:33:33,762 INFO L226 Difference]: Without dead ends: 203 [2020-10-14 17:33:33,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=193, Invalid=2563, Unknown=0, NotChecked=0, Total=2756 [2020-10-14 17:33:33,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-14 17:33:33,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 153. [2020-10-14 17:33:33,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-14 17:33:33,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 165 transitions. [2020-10-14 17:33:33,795 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 165 transitions. Word has length 105 [2020-10-14 17:33:33,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:33:33,795 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 165 transitions. [2020-10-14 17:33:33,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 17:33:33,795 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 165 transitions. [2020-10-14 17:33:33,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-14 17:33:33,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:33:33,796 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:33:33,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 17:33:33,797 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:33:33,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:33:33,797 INFO L82 PathProgramCache]: Analyzing trace with hash -761227298, now seen corresponding path program 33 times [2020-10-14 17:33:33,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:33:33,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428057795] [2020-10-14 17:33:33,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:33:33,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:33,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:34,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:34,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 17:33:34,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:34,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1119 [2020-10-14 17:33:34,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:34,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:34,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 17:33:34,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:33:34,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 17:33:34,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:36,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:33:36,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:36,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:36,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:36,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:33:36,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:36,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:33:36,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:36,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:36,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:33:36,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:36,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:33:36,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:36,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:33:36,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:36,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:36,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:36,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:36,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:36,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:33:36,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:36,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:36,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:33:36,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:36,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:33:36,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:36,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 17:33:36,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:36,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:36,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:36,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:36,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:36,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:36,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:36,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:36,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:36,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:36,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:36,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:36,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 17:33:36,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:36,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:36,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:36,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:36,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:36,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:36,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:36,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:36,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:36,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:36,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:36,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:36,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 17:33:36,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:36,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:36,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:36,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:36,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:36,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:36,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:36,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:36,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:36,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:36,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:36,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:36,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 17:33:36,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:36,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:36,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:36,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:36,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:36,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:33:36,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:36,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:36,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:36,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:36,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:36,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:36,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 17:33:36,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:36,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:36,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:36,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:36,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:36,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:36,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:36,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:36,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:36,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:36,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:36,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:36,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-14 17:33:36,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:36,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:36,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:36,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:36,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:36,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:36,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:36,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:36,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:36,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:36,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:36,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:36,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 17:33:36,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:36,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:36,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:36,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:36,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:36,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:36,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:36,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:36,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:36,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:36,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:36,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:36,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 17:33:36,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:36,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:36,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:36,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:36,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:36,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:36,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:36,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:36,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:36,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:36,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:36,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:36,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 17:33:36,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:36,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:36,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:36,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:36,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:36,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:33:36,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:36,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:36,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:36,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:36,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:36,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:36,500 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 18 proven. 226 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-14 17:33:36,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1428057795] [2020-10-14 17:33:36,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:33:36,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 17:33:36,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095387719] [2020-10-14 17:33:36,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 17:33:36,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:33:36,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 17:33:36,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=701, Unknown=0, NotChecked=0, Total=756 [2020-10-14 17:33:36,502 INFO L87 Difference]: Start difference. First operand 153 states and 165 transitions. Second operand 28 states. [2020-10-14 17:33:40,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:33:40,130 INFO L93 Difference]: Finished difference Result 208 states and 231 transitions. [2020-10-14 17:33:40,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-14 17:33:40,131 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 107 [2020-10-14 17:33:40,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:33:40,133 INFO L225 Difference]: With dead ends: 208 [2020-10-14 17:33:40,134 INFO L226 Difference]: Without dead ends: 206 [2020-10-14 17:33:40,135 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=201, Invalid=2661, Unknown=0, NotChecked=0, Total=2862 [2020-10-14 17:33:40,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-14 17:33:40,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 155. [2020-10-14 17:33:40,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-14 17:33:40,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 168 transitions. [2020-10-14 17:33:40,159 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 168 transitions. Word has length 107 [2020-10-14 17:33:40,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:33:40,159 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 168 transitions. [2020-10-14 17:33:40,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 17:33:40,159 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 168 transitions. [2020-10-14 17:33:40,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-14 17:33:40,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:33:40,160 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:33:40,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 17:33:40,160 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:33:40,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:33:40,160 INFO L82 PathProgramCache]: Analyzing trace with hash -724381828, now seen corresponding path program 34 times [2020-10-14 17:33:40,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:33:40,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1757120664] [2020-10-14 17:33:40,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:33:40,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:40,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:41,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:41,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-14 17:33:41,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:41,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1396 [2020-10-14 17:33:41,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:41,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:41,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 17:33:41,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:33:41,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 17:33:41,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:43,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:33:43,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:43,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:43,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:43,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:33:43,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:43,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:33:43,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:43,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:43,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:33:43,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:43,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:33:43,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:43,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:33:43,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:43,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:43,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:43,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:43,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:43,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:33:43,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:43,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:43,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:33:43,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:43,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:33:43,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:43,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 17:33:43,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:43,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:43,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:43,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:43,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:43,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:33:43,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:43,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:43,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:43,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:43,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:43,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:43,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 17:33:43,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:43,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:43,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:43,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:43,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:43,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:33:43,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:43,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:43,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:43,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:43,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:43,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:43,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 17:33:43,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:43,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:43,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:43,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:43,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:43,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:33:43,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:43,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:43,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:43,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:43,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:43,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:43,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 17:33:43,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:43,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:43,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:43,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:43,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:43,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:43,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:43,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:43,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:43,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:43,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:43,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:43,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-14 17:33:43,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:43,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:43,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:43,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:43,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:43,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:43,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:43,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:43,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:43,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:43,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:43,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:43,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-14 17:33:43,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:43,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:43,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:43,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:43,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:43,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:43,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:43,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:43,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:43,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:43,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:43,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:43,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 17:33:43,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:43,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:43,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:43,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:43,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:43,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:43,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:43,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:43,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:43,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:43,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:43,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:43,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-14 17:33:43,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:43,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:43,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:43,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:43,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:43,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:43,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:43,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:43,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:43,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:43,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:43,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:43,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 17:33:43,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:43,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:43,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:43,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:43,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:43,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:43,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:43,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:43,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:43,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:43,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:43,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:43,408 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 18 proven. 243 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-14 17:33:43,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1757120664] [2020-10-14 17:33:43,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:33:43,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 17:33:43,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493242612] [2020-10-14 17:33:43,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 17:33:43,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:33:43,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 17:33:43,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=702, Unknown=0, NotChecked=0, Total=756 [2020-10-14 17:33:43,411 INFO L87 Difference]: Start difference. First operand 155 states and 168 transitions. Second operand 28 states. [2020-10-14 17:33:47,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:33:47,271 INFO L93 Difference]: Finished difference Result 211 states and 235 transitions. [2020-10-14 17:33:47,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-14 17:33:47,273 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 109 [2020-10-14 17:33:47,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:33:47,274 INFO L225 Difference]: With dead ends: 211 [2020-10-14 17:33:47,274 INFO L226 Difference]: Without dead ends: 209 [2020-10-14 17:33:47,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=217, Invalid=2975, Unknown=0, NotChecked=0, Total=3192 [2020-10-14 17:33:47,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-14 17:33:47,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 157. [2020-10-14 17:33:47,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-14 17:33:47,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 171 transitions. [2020-10-14 17:33:47,308 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 171 transitions. Word has length 109 [2020-10-14 17:33:47,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:33:47,308 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 171 transitions. [2020-10-14 17:33:47,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 17:33:47,308 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 171 transitions. [2020-10-14 17:33:47,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-14 17:33:47,309 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:33:47,309 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:33:47,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 17:33:47,310 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:33:47,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:33:47,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1424111147, now seen corresponding path program 35 times [2020-10-14 17:33:47,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:33:47,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1583137018] [2020-10-14 17:33:47,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:33:47,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:47,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:48,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:48,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 17:33:48,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:48,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 905 [2020-10-14 17:33:48,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:48,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:48,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 17:33:48,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:33:48,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 17:33:48,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:48,600 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 41 [2020-10-14 17:33:48,773 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2020-10-14 17:33:48,972 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 43 [2020-10-14 17:33:50,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:33:50,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:50,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:50,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:50,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:33:50,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:50,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:50,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:50,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:50,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:33:50,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:50,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:33:50,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:50,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:33:50,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:50,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:50,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:50,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:50,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:50,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:33:50,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:50,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:50,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:33:50,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:50,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:33:50,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:50,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 17:33:50,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:50,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:50,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:50,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:50,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:50,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:50,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:50,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:50,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:50,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:50,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:50,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:50,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 17:33:50,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:50,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:50,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:50,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:50,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:50,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:50,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:50,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:50,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:50,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:50,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:50,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:50,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 17:33:50,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:50,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:50,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:50,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:50,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:50,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:33:50,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:50,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:50,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:50,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:50,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:50,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:50,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 17:33:50,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:50,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:50,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:50,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:50,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:50,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:33:50,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:50,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:50,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:50,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:50,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:50,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:50,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 17:33:50,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:50,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:50,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:50,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:50,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:50,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:50,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:50,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:50,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:50,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:50,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:50,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:50,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 17:33:50,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:50,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:50,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:50,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:50,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:50,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:50,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:50,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:50,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:50,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:50,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:50,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:50,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 17:33:50,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:50,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:50,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:50,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:50,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:50,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:50,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:50,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:50,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:50,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:50,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:50,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:50,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 17:33:50,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:50,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:50,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:50,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:50,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:50,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:50,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:50,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:50,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:50,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:50,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:50,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:50,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 17:33:50,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:50,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:50,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:50,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:50,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:50,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:50,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:50,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:50,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:50,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:50,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:50,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:50,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 17:33:50,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:50,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:50,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:50,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:50,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:50,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:50,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:50,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:50,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:50,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:50,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:50,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:50,493 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 20 proven. 236 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-14 17:33:50,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1583137018] [2020-10-14 17:33:50,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:33:50,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 17:33:50,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771856274] [2020-10-14 17:33:50,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 17:33:50,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:33:50,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 17:33:50,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=649, Unknown=0, NotChecked=0, Total=702 [2020-10-14 17:33:50,495 INFO L87 Difference]: Start difference. First operand 157 states and 171 transitions. Second operand 27 states. [2020-10-14 17:33:51,339 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2020-10-14 17:33:51,629 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2020-10-14 17:33:54,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:33:54,310 INFO L93 Difference]: Finished difference Result 212 states and 237 transitions. [2020-10-14 17:33:54,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-14 17:33:54,311 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 111 [2020-10-14 17:33:54,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:33:54,313 INFO L225 Difference]: With dead ends: 212 [2020-10-14 17:33:54,313 INFO L226 Difference]: Without dead ends: 210 [2020-10-14 17:33:54,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=171, Invalid=2279, Unknown=0, NotChecked=0, Total=2450 [2020-10-14 17:33:54,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-14 17:33:54,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 204. [2020-10-14 17:33:54,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-10-14 17:33:54,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 228 transitions. [2020-10-14 17:33:54,361 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 228 transitions. Word has length 111 [2020-10-14 17:33:54,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:33:54,362 INFO L479 AbstractCegarLoop]: Abstraction has 204 states and 228 transitions. [2020-10-14 17:33:54,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 17:33:54,362 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 228 transitions. [2020-10-14 17:33:54,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-14 17:33:54,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:33:54,363 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:33:54,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 17:33:54,364 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:33:54,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:33:54,364 INFO L82 PathProgramCache]: Analyzing trace with hash 324376474, now seen corresponding path program 36 times [2020-10-14 17:33:54,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:33:54,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [926317477] [2020-10-14 17:33:54,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:33:54,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:54,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:56,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:56,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-14 17:33:56,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:56,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1701 [2020-10-14 17:33:56,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:56,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:56,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 17:33:56,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:33:56,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-14 17:33:56,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:57,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:33:57,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:57,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:57,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:57,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:33:57,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:57,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:57,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:57,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:57,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:33:57,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:57,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:33:57,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:57,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:33:57,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:57,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:57,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:57,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:57,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:57,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:33:57,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:57,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:57,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:33:57,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:57,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:33:57,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:57,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 17:33:57,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:57,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:57,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:57,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:57,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:57,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:57,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:57,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:57,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:57,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:57,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:57,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:57,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 17:33:57,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:57,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:57,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:57,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:57,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:57,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:57,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:57,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:57,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:57,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:57,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:57,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:57,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 17:33:57,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:57,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:57,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:57,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:57,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:57,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:57,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:57,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:57,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:57,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:57,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:57,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:57,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 17:33:57,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:57,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:57,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:57,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:57,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:57,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:57,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:57,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:57,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:57,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:57,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:57,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:57,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 17:33:57,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:57,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:57,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:57,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:57,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:57,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:57,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:57,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:57,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:57,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:57,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:57,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:57,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 17:33:57,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:57,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:57,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:57,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:57,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:57,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:57,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:57,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:57,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:57,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:57,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:57,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:57,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 17:33:57,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:57,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:57,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:57,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:57,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:57,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:57,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:57,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:57,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:57,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:57,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:57,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:57,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 17:33:57,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:57,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:57,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:57,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:57,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:57,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:57,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:57,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:57,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:57,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:57,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:57,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:57,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 17:33:57,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:33:57,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:33:57,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:33:57,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:33:57,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:33:57,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:33:57,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:33:57,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:33:57,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:33:57,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:33:57,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:33:57,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:33:57,396 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 18 proven. 262 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-14 17:33:57,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [926317477] [2020-10-14 17:33:57,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:33:57,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 17:33:57,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362011293] [2020-10-14 17:33:57,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 17:33:57,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:33:57,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 17:33:57,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2020-10-14 17:33:57,397 INFO L87 Difference]: Start difference. First operand 204 states and 228 transitions. Second operand 27 states. [2020-10-14 17:34:00,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:34:00,772 INFO L93 Difference]: Finished difference Result 225 states and 250 transitions. [2020-10-14 17:34:00,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-14 17:34:00,774 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 111 [2020-10-14 17:34:00,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:34:00,775 INFO L225 Difference]: With dead ends: 225 [2020-10-14 17:34:00,776 INFO L226 Difference]: Without dead ends: 223 [2020-10-14 17:34:00,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=165, Invalid=2385, Unknown=0, NotChecked=0, Total=2550 [2020-10-14 17:34:00,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-14 17:34:00,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 204. [2020-10-14 17:34:00,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-10-14 17:34:00,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 228 transitions. [2020-10-14 17:34:00,823 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 228 transitions. Word has length 111 [2020-10-14 17:34:00,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:34:00,824 INFO L479 AbstractCegarLoop]: Abstraction has 204 states and 228 transitions. [2020-10-14 17:34:00,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 17:34:00,824 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 228 transitions. [2020-10-14 17:34:00,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-14 17:34:00,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:34:00,825 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:34:00,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 17:34:00,826 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:34:00,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:34:00,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1410269811, now seen corresponding path program 37 times [2020-10-14 17:34:00,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:34:00,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1538566667] [2020-10-14 17:34:00,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:34:00,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:00,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:01,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:01,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-14 17:34:01,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:01,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 889 [2020-10-14 17:34:01,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:01,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:01,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 17:34:01,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:34:01,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-14 17:34:01,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:03,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:34:03,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:03,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:03,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:03,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:34:03,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:03,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:03,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:03,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:03,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:34:03,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:03,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:34:03,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:03,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:34:03,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:03,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:03,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:03,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:03,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:03,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:34:03,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:03,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:03,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:34:03,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:03,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:34:03,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:03,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 17:34:03,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:03,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:03,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:03,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:03,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:03,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:03,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:03,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:03,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:03,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:03,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:03,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:03,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 17:34:03,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:03,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:03,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:03,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:03,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:03,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:34:03,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:03,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:03,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:03,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:03,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:03,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:03,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 17:34:03,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:03,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:03,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:03,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:03,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:03,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:34:03,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:03,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:03,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:03,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:03,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:03,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:03,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 17:34:03,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:03,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:03,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:03,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:03,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:03,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:34:03,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:03,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:03,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:03,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:03,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:03,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:03,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 17:34:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:03,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:03,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:03,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:03,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:03,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:34:03,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:03,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:03,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:03,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:03,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:03,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:03,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 17:34:03,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:03,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:03,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:03,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:03,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:03,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:34:03,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:03,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:03,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:03,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:03,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:03,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:03,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 17:34:03,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:03,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:03,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:03,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:03,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:03,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:03,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:03,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:03,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:03,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:03,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:03,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:03,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-14 17:34:03,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:03,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:03,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:03,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:03,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:03,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:03,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:03,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:03,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:03,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:03,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:03,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:03,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-14 17:34:03,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:03,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:03,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:03,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:03,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:03,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:34:03,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:03,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:03,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:03,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:03,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:03,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:03,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 17:34:03,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:03,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:03,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:03,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:03,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:03,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:03,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:03,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:03,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:03,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:03,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:03,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:03,695 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 20 proven. 249 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-14 17:34:03,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1538566667] [2020-10-14 17:34:03,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:34:03,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-14 17:34:03,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277498232] [2020-10-14 17:34:03,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-14 17:34:03,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:34:03,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-14 17:34:03,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=754, Unknown=0, NotChecked=0, Total=812 [2020-10-14 17:34:03,696 INFO L87 Difference]: Start difference. First operand 204 states and 228 transitions. Second operand 29 states. [2020-10-14 17:34:04,717 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2020-10-14 17:34:08,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:34:08,279 INFO L93 Difference]: Finished difference Result 259 states and 294 transitions. [2020-10-14 17:34:08,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-14 17:34:08,281 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 113 [2020-10-14 17:34:08,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:34:08,283 INFO L225 Difference]: With dead ends: 259 [2020-10-14 17:34:08,284 INFO L226 Difference]: Without dead ends: 257 [2020-10-14 17:34:08,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=191, Invalid=2779, Unknown=0, NotChecked=0, Total=2970 [2020-10-14 17:34:08,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-10-14 17:34:08,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 204. [2020-10-14 17:34:08,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-10-14 17:34:08,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 228 transitions. [2020-10-14 17:34:08,332 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 228 transitions. Word has length 113 [2020-10-14 17:34:08,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:34:08,332 INFO L479 AbstractCegarLoop]: Abstraction has 204 states and 228 transitions. [2020-10-14 17:34:08,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-14 17:34:08,332 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 228 transitions. [2020-10-14 17:34:08,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-14 17:34:08,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:34:08,334 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:34:08,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 17:34:08,334 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:34:08,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:34:08,335 INFO L82 PathProgramCache]: Analyzing trace with hash -2053862511, now seen corresponding path program 38 times [2020-10-14 17:34:08,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:34:08,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [903949663] [2020-10-14 17:34:08,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:34:08,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:08,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:09,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:09,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 17:34:09,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:09,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1126 [2020-10-14 17:34:09,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:09,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:09,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 17:34:09,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:34:09,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 17:34:09,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:11,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:34:11,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:11,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:11,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:11,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:34:11,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:11,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:34:11,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:11,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:11,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:34:11,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:11,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:34:11,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:11,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:34:11,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:11,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:11,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:11,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:11,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:11,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:34:11,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:11,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:11,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:34:11,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:11,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:34:11,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:11,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 17:34:11,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:11,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:11,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:11,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:11,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:11,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:11,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:11,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:11,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:11,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:11,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:11,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:11,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 17:34:11,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:11,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:11,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:11,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:11,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:11,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:11,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:11,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:11,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:11,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:11,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:11,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:11,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 17:34:11,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:11,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:11,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:11,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:11,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:11,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:11,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:11,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:11,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:11,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:11,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:11,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:11,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 17:34:11,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:11,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:11,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:11,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:11,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:11,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:11,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:11,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:11,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:11,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:11,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:11,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:11,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 17:34:11,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:11,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:11,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:11,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:11,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:11,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:11,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:11,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:11,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:11,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:11,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:11,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:11,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-14 17:34:11,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:11,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:11,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:11,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:11,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:11,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:11,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:11,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:11,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:11,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:11,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:11,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:11,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 17:34:11,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:11,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:11,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:11,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:11,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:11,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:11,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:11,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:11,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:11,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:11,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:11,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:11,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 17:34:11,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:11,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:11,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:11,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:11,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:11,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:11,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:11,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:11,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:11,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:11,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:11,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:11,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 17:34:11,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:11,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:11,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:11,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:11,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:11,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:11,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:11,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:11,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:11,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:11,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:11,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:11,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 17:34:11,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:11,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:11,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:11,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:11,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:11,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:11,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:11,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:11,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:11,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:11,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:11,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:11,301 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 20 proven. 264 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-14 17:34:11,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [903949663] [2020-10-14 17:34:11,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:34:11,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-14 17:34:11,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467337356] [2020-10-14 17:34:11,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-14 17:34:11,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:34:11,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-14 17:34:11,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=755, Unknown=0, NotChecked=0, Total=812 [2020-10-14 17:34:11,303 INFO L87 Difference]: Start difference. First operand 204 states and 228 transitions. Second operand 29 states. [2020-10-14 17:34:15,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:34:15,287 INFO L93 Difference]: Finished difference Result 260 states and 295 transitions. [2020-10-14 17:34:15,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-14 17:34:15,288 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 115 [2020-10-14 17:34:15,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:34:15,291 INFO L225 Difference]: With dead ends: 260 [2020-10-14 17:34:15,291 INFO L226 Difference]: Without dead ends: 258 [2020-10-14 17:34:15,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=185, Invalid=2785, Unknown=0, NotChecked=0, Total=2970 [2020-10-14 17:34:15,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-10-14 17:34:15,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 204. [2020-10-14 17:34:15,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-10-14 17:34:15,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 228 transitions. [2020-10-14 17:34:15,340 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 228 transitions. Word has length 115 [2020-10-14 17:34:15,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:34:15,341 INFO L479 AbstractCegarLoop]: Abstraction has 204 states and 228 transitions. [2020-10-14 17:34:15,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-14 17:34:15,341 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 228 transitions. [2020-10-14 17:34:15,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-14 17:34:15,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:34:15,342 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:34:15,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-14 17:34:15,343 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:34:15,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:34:15,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1809597743, now seen corresponding path program 39 times [2020-10-14 17:34:15,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:34:15,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [54393557] [2020-10-14 17:34:15,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:34:15,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:15,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:16,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:16,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-14 17:34:16,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:16,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1533 [2020-10-14 17:34:16,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:16,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:16,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 17:34:16,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:34:16,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-14 17:34:16,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:18,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:34:18,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:18,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:18,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:18,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:34:18,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:18,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:18,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:18,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:18,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:34:18,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:18,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:34:18,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:18,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:34:18,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:18,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:18,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:18,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:18,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:18,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:34:18,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:18,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:18,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:34:18,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:18,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:34:18,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:18,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 17:34:18,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:18,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:18,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:18,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:18,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:18,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:18,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:18,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:18,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:18,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:18,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:18,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:18,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 17:34:18,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:18,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:18,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:18,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:18,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:18,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:18,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:18,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:18,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:18,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:18,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:18,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:18,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 17:34:18,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:18,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:18,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:18,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:18,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:18,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:18,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:18,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:18,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:18,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:18,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:18,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:18,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 17:34:18,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:18,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:18,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:18,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:18,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:18,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:18,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:18,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:18,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:18,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:18,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:18,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:18,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-14 17:34:18,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:18,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:18,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:18,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:18,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:18,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:18,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:18,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:18,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:18,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:18,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:18,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:18,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-14 17:34:18,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:18,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:18,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:18,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:18,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:18,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:34:18,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:18,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:18,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:18,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:18,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:18,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:18,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 17:34:18,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:18,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:18,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:18,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:18,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:18,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:18,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:18,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:18,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:18,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:18,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:18,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:18,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-14 17:34:18,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:18,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:18,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:18,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:18,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:18,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:18,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:18,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:18,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:18,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:18,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:18,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:18,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 17:34:18,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:18,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:18,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:18,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:18,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:18,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:18,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:18,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:18,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:18,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:18,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:18,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:18,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-14 17:34:18,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:18,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:18,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:18,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:18,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:18,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:18,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:18,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:18,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:18,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:18,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:18,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:18,822 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 20 proven. 281 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-14 17:34:18,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [54393557] [2020-10-14 17:34:18,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:34:18,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 17:34:18,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642498864] [2020-10-14 17:34:18,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 17:34:18,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:34:18,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 17:34:18,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=811, Unknown=0, NotChecked=0, Total=870 [2020-10-14 17:34:18,824 INFO L87 Difference]: Start difference. First operand 204 states and 228 transitions. Second operand 30 states. [2020-10-14 17:34:23,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:34:23,754 INFO L93 Difference]: Finished difference Result 223 states and 248 transitions. [2020-10-14 17:34:23,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-14 17:34:23,756 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 117 [2020-10-14 17:34:23,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:34:23,758 INFO L225 Difference]: With dead ends: 223 [2020-10-14 17:34:23,758 INFO L226 Difference]: Without dead ends: 221 [2020-10-14 17:34:23,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=222, Invalid=3318, Unknown=0, NotChecked=0, Total=3540 [2020-10-14 17:34:23,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-10-14 17:34:23,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 165. [2020-10-14 17:34:23,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-14 17:34:23,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 179 transitions. [2020-10-14 17:34:23,796 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 179 transitions. Word has length 117 [2020-10-14 17:34:23,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:34:23,796 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 179 transitions. [2020-10-14 17:34:23,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 17:34:23,796 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 179 transitions. [2020-10-14 17:34:23,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-14 17:34:23,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:34:23,797 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:34:23,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-14 17:34:23,798 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:34:23,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:34:23,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1202203000, now seen corresponding path program 40 times [2020-10-14 17:34:23,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:34:23,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851805835] [2020-10-14 17:34:23,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:34:23,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:23,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:25,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:25,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-14 17:34:25,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:25,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1341 [2020-10-14 17:34:25,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:25,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:25,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 17:34:25,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:34:25,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-14 17:34:25,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:34:25,499 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 43 [2020-10-14 17:34:25,671 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 45 [2020-10-14 17:34:25,843 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 47 [2020-10-14 17:34:27,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:34:27,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:27,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:27,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:27,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:34:27,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:27,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:27,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:27,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:27,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:34:27,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:27,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:34:27,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:27,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:34:27,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:27,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:27,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:27,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:27,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:27,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:34:27,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:27,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:27,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:34:27,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:27,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:34:27,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:27,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 17:34:27,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:27,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:27,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:27,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:27,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:27,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:34:27,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:27,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:27,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:27,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:27,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:27,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:27,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 17:34:27,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:27,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:27,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:27,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:27,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:27,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:34:27,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:27,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:27,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:27,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:27,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:27,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:27,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 17:34:27,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:27,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:27,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:27,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:27,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:27,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:34:27,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:27,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:27,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:27,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:27,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:27,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:27,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 17:34:27,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:27,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:27,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:27,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:27,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:27,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:34:27,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:27,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:27,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:27,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:27,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:27,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:27,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 17:34:27,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:27,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:27,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:27,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:27,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:27,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:34:27,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:27,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:27,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:27,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:27,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:27,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:27,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 17:34:27,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:27,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:27,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:27,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:27,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:27,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:34:27,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:27,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:27,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:27,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:27,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:27,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:27,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 17:34:27,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:27,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:27,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:27,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:27,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:27,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:34:27,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:27,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:27,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:27,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:27,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:27,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:27,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 17:34:27,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:27,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:27,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:27,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:27,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:27,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:34:27,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:27,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:27,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:27,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:27,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:27,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:27,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 17:34:27,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:27,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:27,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:27,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:27,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:27,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:34:27,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:27,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:27,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:27,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:27,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:27,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:27,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 17:34:27,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:27,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:27,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:27,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:27,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:27,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:34:27,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:27,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:27,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:27,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:27,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:27,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:27,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-14 17:34:27,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:27,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:27,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:27,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:27,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:27,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:34:27,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:27,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:27,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:27,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:27,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:27,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:27,693 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 202 proven. 98 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-14 17:34:27,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851805835] [2020-10-14 17:34:27,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:34:27,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 17:34:27,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808415441] [2020-10-14 17:34:27,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 17:34:27,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:34:27,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 17:34:27,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=613, Unknown=0, NotChecked=0, Total=756 [2020-10-14 17:34:27,694 INFO L87 Difference]: Start difference. First operand 165 states and 179 transitions. Second operand 28 states. [2020-10-14 17:34:28,904 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2020-10-14 17:34:30,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:34:30,440 INFO L93 Difference]: Finished difference Result 220 states and 245 transitions. [2020-10-14 17:34:30,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-14 17:34:30,440 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 119 [2020-10-14 17:34:30,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:34:30,442 INFO L225 Difference]: With dead ends: 220 [2020-10-14 17:34:30,442 INFO L226 Difference]: Without dead ends: 165 [2020-10-14 17:34:30,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 27 SyntacticMatches, 4 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 652 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=406, Invalid=2144, Unknown=0, NotChecked=0, Total=2550 [2020-10-14 17:34:30,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-14 17:34:30,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2020-10-14 17:34:30,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-14 17:34:30,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 178 transitions. [2020-10-14 17:34:30,481 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 178 transitions. Word has length 119 [2020-10-14 17:34:30,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:34:30,481 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 178 transitions. [2020-10-14 17:34:30,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 17:34:30,481 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 178 transitions. [2020-10-14 17:34:30,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-14 17:34:30,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:34:30,483 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:34:30,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-14 17:34:30,483 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:34:30,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:34:30,483 INFO L82 PathProgramCache]: Analyzing trace with hash -551809203, now seen corresponding path program 41 times [2020-10-14 17:34:30,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:34:30,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [897766401] [2020-10-14 17:34:30,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:34:30,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:30,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:32,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:32,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 17:34:32,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:32,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1678 [2020-10-14 17:34:32,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:32,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:32,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 17:34:32,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:34:32,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-14 17:34:32,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:33,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:34:33,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:33,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:33,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:33,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:34:33,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:33,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:33,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:33,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:33,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:34:33,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:33,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:34:33,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:33,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:34:33,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:33,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:33,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:33,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:33,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:33,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:34:33,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:33,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:33,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:34:33,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:33,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:34:33,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:33,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 17:34:33,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:33,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:33,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:33,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:33,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:33,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:34:33,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:33,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:33,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:33,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:33,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:33,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:33,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 17:34:33,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:33,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:33,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:33,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:33,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:33,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:34:33,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:33,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:33,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:33,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:33,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:33,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:33,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 17:34:33,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:33,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:33,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:33,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:33,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:33,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:34:33,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:33,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:33,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:33,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:33,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:33,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:33,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 17:34:33,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:33,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:33,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:33,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:33,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:33,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:34:33,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:33,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:33,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:33,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:33,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:33,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:33,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 17:34:33,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:33,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:33,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:33,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:33,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:33,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:34:33,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:33,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:33,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:33,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:33,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:33,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:33,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 17:34:33,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:33,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:33,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:33,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:33,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:33,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:33,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:33,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:33,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:33,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:33,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:33,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:33,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 17:34:33,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:33,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:33,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:33,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:33,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:33,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:34:33,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:33,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:33,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:33,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:33,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:33,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:33,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 17:34:33,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:33,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:33,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:33,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:33,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:33,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:34:33,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:33,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:33,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:33,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:33,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:33,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:33,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 17:34:33,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:33,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:33,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:33,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:33,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:33,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:34:33,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:33,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:33,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:33,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:33,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:33,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:33,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-14 17:34:33,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:33,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:33,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:33,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:33,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:33,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:33,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:33,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:33,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:33,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:33,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:33,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:33,986 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 20 proven. 300 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-14 17:34:33,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [897766401] [2020-10-14 17:34:33,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:34:33,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 17:34:33,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017509352] [2020-10-14 17:34:33,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 17:34:33,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:34:33,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 17:34:33,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=812, Unknown=0, NotChecked=0, Total=870 [2020-10-14 17:34:33,987 INFO L87 Difference]: Start difference. First operand 165 states and 178 transitions. Second operand 30 states. [2020-10-14 17:34:38,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:34:38,858 INFO L93 Difference]: Finished difference Result 227 states and 252 transitions. [2020-10-14 17:34:38,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-14 17:34:38,860 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 119 [2020-10-14 17:34:38,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:34:38,862 INFO L225 Difference]: With dead ends: 227 [2020-10-14 17:34:38,862 INFO L226 Difference]: Without dead ends: 225 [2020-10-14 17:34:38,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=227, Invalid=3313, Unknown=0, NotChecked=0, Total=3540 [2020-10-14 17:34:38,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-10-14 17:34:38,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 214. [2020-10-14 17:34:38,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-10-14 17:34:38,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 238 transitions. [2020-10-14 17:34:38,913 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 238 transitions. Word has length 119 [2020-10-14 17:34:38,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:34:38,913 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 238 transitions. [2020-10-14 17:34:38,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 17:34:38,913 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 238 transitions. [2020-10-14 17:34:38,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-14 17:34:38,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:34:38,915 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:34:38,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-14 17:34:38,915 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:34:38,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:34:38,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1523421478, now seen corresponding path program 42 times [2020-10-14 17:34:38,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:34:38,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1436228625] [2020-10-14 17:34:38,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:34:38,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:39,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:40,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:40,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 17:34:40,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:40,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1056 [2020-10-14 17:34:40,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:40,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:40,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 17:34:40,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:34:40,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-14 17:34:40,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:42,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:34:42,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:42,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:42,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:42,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:34:42,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:42,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:34:42,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:42,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:42,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:34:42,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:42,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:34:42,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:42,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:34:42,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:42,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:42,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:42,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:42,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:42,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:34:42,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:42,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:42,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:34:42,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:42,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:34:42,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:42,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 17:34:42,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:42,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:42,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:42,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:42,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:42,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:34:42,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:42,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:42,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:42,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:42,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:42,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:42,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 17:34:42,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:42,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:42,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:42,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:42,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:42,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:34:42,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:42,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:42,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:42,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:42,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:42,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:42,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 17:34:42,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:42,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:42,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:42,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:42,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:42,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:34:42,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:42,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:42,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:42,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:42,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:42,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:42,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 17:34:42,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:42,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:42,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:42,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:42,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:42,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:34:42,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:42,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:42,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:42,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:42,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:42,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:42,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 17:34:42,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:42,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:42,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:42,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:42,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:42,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:42,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:42,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:42,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:42,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:42,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:42,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:42,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 17:34:42,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:42,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:42,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:42,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:42,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:42,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:42,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:42,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:42,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:42,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:42,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:42,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:42,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 17:34:42,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:42,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:42,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:42,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:42,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:42,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:42,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:42,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:42,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:42,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:42,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:42,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:42,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-14 17:34:42,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:42,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:42,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:42,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:42,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:42,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:42,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:42,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:42,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:42,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:42,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:42,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:42,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-14 17:34:42,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:42,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:42,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:42,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:42,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:42,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:34:42,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:42,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:42,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:42,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:42,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:42,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:42,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 17:34:42,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:42,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:42,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:42,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:42,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:42,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:42,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:42,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:42,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:42,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:42,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:42,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:42,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-14 17:34:42,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:42,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:42,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:42,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:42,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:42,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:34:42,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:42,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:42,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:42,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:42,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:42,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:42,821 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 22 proven. 291 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-14 17:34:42,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1436228625] [2020-10-14 17:34:42,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:34:42,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-14 17:34:42,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156708383] [2020-10-14 17:34:42,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-14 17:34:42,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:34:42,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-14 17:34:42,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=755, Unknown=0, NotChecked=0, Total=812 [2020-10-14 17:34:42,823 INFO L87 Difference]: Start difference. First operand 214 states and 238 transitions. Second operand 29 states. [2020-10-14 17:34:44,090 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2020-10-14 17:34:44,915 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2020-10-14 17:34:45,262 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2020-10-14 17:34:48,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:34:48,623 INFO L93 Difference]: Finished difference Result 273 states and 309 transitions. [2020-10-14 17:34:48,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-14 17:34:48,624 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 121 [2020-10-14 17:34:48,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:34:48,626 INFO L225 Difference]: With dead ends: 273 [2020-10-14 17:34:48,626 INFO L226 Difference]: Without dead ends: 271 [2020-10-14 17:34:48,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 490 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=215, Invalid=3207, Unknown=0, NotChecked=0, Total=3422 [2020-10-14 17:34:48,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-10-14 17:34:48,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 253. [2020-10-14 17:34:48,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-10-14 17:34:48,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 287 transitions. [2020-10-14 17:34:48,691 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 287 transitions. Word has length 121 [2020-10-14 17:34:48,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:34:48,691 INFO L479 AbstractCegarLoop]: Abstraction has 253 states and 287 transitions. [2020-10-14 17:34:48,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-14 17:34:48,691 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 287 transitions. [2020-10-14 17:34:48,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-14 17:34:48,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:34:48,693 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:34:48,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-14 17:34:48,693 INFO L427 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:34:48,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:34:48,693 INFO L82 PathProgramCache]: Analyzing trace with hash -2121152021, now seen corresponding path program 43 times [2020-10-14 17:34:48,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:34:48,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [388307142] [2020-10-14 17:34:48,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:34:48,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:48,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:50,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:50,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-14 17:34:50,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:50,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1584 [2020-10-14 17:34:50,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:50,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:50,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 17:34:50,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:34:50,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-14 17:34:50,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:51,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:34:51,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:51,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:51,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:51,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:34:51,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:51,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:34:51,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:51,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:51,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:34:51,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:51,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:34:51,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:51,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:34:51,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:51,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:51,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:51,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:51,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:51,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:34:51,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:51,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:51,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:34:51,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:51,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:34:51,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:51,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 17:34:51,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:51,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:51,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:51,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:51,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:51,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:51,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:51,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:51,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:51,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:51,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:51,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:51,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 17:34:51,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:51,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:52,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:52,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:52,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:52,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:52,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:52,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:52,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:52,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:52,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:52,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:52,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 17:34:52,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:52,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:52,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:52,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:52,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:52,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:52,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:52,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:52,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:52,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:52,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:52,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:52,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-14 17:34:52,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:52,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:52,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:52,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:52,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:52,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:34:52,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:52,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:52,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:52,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:52,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:52,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:52,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 17:34:52,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:52,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:52,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:52,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:52,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:52,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:34:52,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:52,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:52,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:52,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:52,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:52,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:52,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 17:34:52,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:52,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:52,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:52,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:52,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:52,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:34:52,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:52,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:52,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:52,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:52,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:52,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:52,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-14 17:34:52,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:52,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:52,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:52,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:52,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:52,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:34:52,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:52,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:52,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:52,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:52,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:52,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:52,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-14 17:34:52,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:52,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:52,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:52,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:52,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:52,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:52,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:52,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:52,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:52,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:52,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:52,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:52,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 17:34:52,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:52,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:52,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:52,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:52,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:52,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:34:52,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:52,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:52,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:52,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:52,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:52,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:52,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-14 17:34:52,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:52,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:52,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:52,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:52,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:52,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:52,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:52,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:52,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:52,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:52,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:52,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:52,071 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 20 proven. 321 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-14 17:34:52,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [388307142] [2020-10-14 17:34:52,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:34:52,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-14 17:34:52,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511279316] [2020-10-14 17:34:52,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-14 17:34:52,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:34:52,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-14 17:34:52,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2020-10-14 17:34:52,072 INFO L87 Difference]: Start difference. First operand 253 states and 287 transitions. Second operand 29 states. [2020-10-14 17:34:56,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:34:56,688 INFO L93 Difference]: Finished difference Result 285 states and 323 transitions. [2020-10-14 17:34:56,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-14 17:34:56,690 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 121 [2020-10-14 17:34:56,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:34:56,692 INFO L225 Difference]: With dead ends: 285 [2020-10-14 17:34:56,692 INFO L226 Difference]: Without dead ends: 283 [2020-10-14 17:34:56,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=178, Invalid=2792, Unknown=0, NotChecked=0, Total=2970 [2020-10-14 17:34:56,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-14 17:34:56,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 216. [2020-10-14 17:34:56,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-14 17:34:56,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 240 transitions. [2020-10-14 17:34:56,747 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 240 transitions. Word has length 121 [2020-10-14 17:34:56,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:34:56,747 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 240 transitions. [2020-10-14 17:34:56,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-14 17:34:56,747 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 240 transitions. [2020-10-14 17:34:56,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-14 17:34:56,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:34:56,749 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:34:56,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-14 17:34:56,749 INFO L427 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:34:56,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:34:56,749 INFO L82 PathProgramCache]: Analyzing trace with hash 918494276, now seen corresponding path program 44 times [2020-10-14 17:34:56,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:34:56,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1583092470] [2020-10-14 17:34:56,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:34:56,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:56,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:57,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:57,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-14 17:34:57,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:57,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1173 [2020-10-14 17:34:57,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:57,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:57,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 17:34:57,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:34:57,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-14 17:34:57,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:59,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:34:59,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:59,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:59,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:59,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:34:59,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:59,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:59,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:59,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:59,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:34:59,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:59,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:34:59,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:59,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:34:59,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:59,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:59,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:59,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:59,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:59,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:34:59,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:59,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:59,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:34:59,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:59,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:34:59,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:59,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 17:34:59,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:59,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:59,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:59,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:59,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:59,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:59,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:59,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:59,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:59,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:59,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:59,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:59,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 17:34:59,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:59,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:59,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:59,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:59,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:59,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:59,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:59,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:59,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:59,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:59,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:59,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:59,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 17:34:59,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:59,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:59,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:59,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:59,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:59,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:59,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:59,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:59,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:59,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:59,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:59,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:59,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 17:34:59,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:59,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:59,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:59,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:59,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:59,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:59,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:59,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:59,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:59,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:59,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:59,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:59,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 17:34:59,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:59,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:59,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:59,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:59,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:59,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:59,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:59,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:59,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:59,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:59,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:59,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:59,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-14 17:34:59,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:59,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:59,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:59,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:59,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:59,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:34:59,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:59,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:59,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:59,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:59,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:59,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:59,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 17:34:59,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:59,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:59,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:59,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:59,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:59,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:59,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:59,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:59,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:59,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:59,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:59,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:59,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 17:34:59,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:59,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:59,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:59,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:59,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:59,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:59,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:59,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:59,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:59,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:59,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:59,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:59,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 17:34:59,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:59,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:59,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:59,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:59,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:59,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:59,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:59,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:59,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:59,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:59,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:59,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:59,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 17:34:59,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:59,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:59,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:59,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:59,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:59,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:34:59,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:59,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:59,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:59,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:59,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:59,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:59,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-14 17:34:59,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:34:59,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:34:59,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:34:59,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:34:59,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:34:59,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:34:59,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:34:59,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:34:59,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:34:59,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:34:59,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:34:59,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:34:59,898 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 22 proven. 306 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-14 17:34:59,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1583092470] [2020-10-14 17:34:59,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:34:59,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 17:34:59,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214598832] [2020-10-14 17:34:59,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 17:34:59,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:34:59,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 17:34:59,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=811, Unknown=0, NotChecked=0, Total=870 [2020-10-14 17:34:59,899 INFO L87 Difference]: Start difference. First operand 216 states and 240 transitions. Second operand 30 states. [2020-10-14 17:35:01,642 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-10-14 17:35:02,221 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-10-14 17:35:02,667 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-10-14 17:35:06,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:35:06,480 INFO L93 Difference]: Finished difference Result 275 states and 311 transitions. [2020-10-14 17:35:06,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-14 17:35:06,482 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 123 [2020-10-14 17:35:06,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:35:06,484 INFO L225 Difference]: With dead ends: 275 [2020-10-14 17:35:06,484 INFO L226 Difference]: Without dead ends: 273 [2020-10-14 17:35:06,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=213, Invalid=3209, Unknown=0, NotChecked=0, Total=3422 [2020-10-14 17:35:06,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-10-14 17:35:06,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 216. [2020-10-14 17:35:06,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-14 17:35:06,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 240 transitions. [2020-10-14 17:35:06,534 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 240 transitions. Word has length 123 [2020-10-14 17:35:06,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:35:06,535 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 240 transitions. [2020-10-14 17:35:06,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 17:35:06,535 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 240 transitions. [2020-10-14 17:35:06,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-14 17:35:06,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:35:06,536 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:35:06,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-14 17:35:06,536 INFO L427 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:35:06,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:35:06,537 INFO L82 PathProgramCache]: Analyzing trace with hash -595961886, now seen corresponding path program 45 times [2020-10-14 17:35:06,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:35:06,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2022560200] [2020-10-14 17:35:06,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:35:06,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:06,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:07,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:07,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-14 17:35:07,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:07,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1193 [2020-10-14 17:35:07,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:07,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:07,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 17:35:07,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:35:07,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-14 17:35:07,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:10,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:35:10,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:10,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:10,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:10,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:35:10,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:10,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:10,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:10,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:10,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:35:10,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:10,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:35:10,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:10,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:35:10,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:10,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:10,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:10,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:10,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:10,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:35:10,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:10,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:10,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:35:10,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:10,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:35:10,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:10,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 17:35:10,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:10,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:10,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:10,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:10,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:10,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:10,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:10,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:10,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:10,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:10,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:10,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:10,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 17:35:10,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:10,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:10,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:10,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:10,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:10,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:10,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:10,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:10,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:10,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:10,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:10,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:10,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 17:35:10,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:10,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:10,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:10,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:10,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:10,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:10,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:10,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:10,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:10,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:10,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:10,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:10,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 17:35:10,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:10,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:10,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:10,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:10,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:10,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:10,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:10,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:10,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:10,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:10,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:10,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:10,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-14 17:35:10,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:10,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:10,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:10,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:10,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:10,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:10,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:10,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:10,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:10,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:10,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:10,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:10,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-14 17:35:10,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:10,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:10,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:10,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:10,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:10,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:10,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:10,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:10,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:10,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:10,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:10,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:10,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 17:35:10,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:10,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:10,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:10,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:10,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:10,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:10,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:10,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:10,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:10,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:10,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:10,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:10,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-14 17:35:10,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:10,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:10,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:10,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:10,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:10,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:10,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:10,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:10,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:10,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:10,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:10,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:10,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 17:35:10,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:10,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:10,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:10,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:10,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:10,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:10,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:10,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:10,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:10,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:10,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:10,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:10,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-14 17:35:10,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:10,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:10,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:10,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:10,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:10,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:10,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:10,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:10,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:10,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:10,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:10,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:10,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-14 17:35:10,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:10,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:10,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:10,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:10,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:10,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:10,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:10,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:10,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:10,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:10,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:10,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:10,165 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 22 proven. 323 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-14 17:35:10,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2022560200] [2020-10-14 17:35:10,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:35:10,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-14 17:35:10,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120260741] [2020-10-14 17:35:10,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-14 17:35:10,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:35:10,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-14 17:35:10,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=869, Unknown=0, NotChecked=0, Total=930 [2020-10-14 17:35:10,166 INFO L87 Difference]: Start difference. First operand 216 states and 240 transitions. Second operand 31 states. [2020-10-14 17:35:12,333 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-10-14 17:35:16,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:35:16,555 INFO L93 Difference]: Finished difference Result 234 states and 259 transitions. [2020-10-14 17:35:16,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-14 17:35:16,557 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 125 [2020-10-14 17:35:16,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:35:16,558 INFO L225 Difference]: With dead ends: 234 [2020-10-14 17:35:16,558 INFO L226 Difference]: Without dead ends: 232 [2020-10-14 17:35:16,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=228, Invalid=3554, Unknown=0, NotChecked=0, Total=3782 [2020-10-14 17:35:16,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-10-14 17:35:16,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 173. [2020-10-14 17:35:16,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-14 17:35:16,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 186 transitions. [2020-10-14 17:35:16,600 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 186 transitions. Word has length 125 [2020-10-14 17:35:16,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:35:16,600 INFO L479 AbstractCegarLoop]: Abstraction has 173 states and 186 transitions. [2020-10-14 17:35:16,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-14 17:35:16,600 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 186 transitions. [2020-10-14 17:35:16,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-14 17:35:16,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:35:16,601 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:35:16,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-14 17:35:16,602 INFO L427 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:35:16,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:35:16,602 INFO L82 PathProgramCache]: Analyzing trace with hash 5579776, now seen corresponding path program 46 times [2020-10-14 17:35:16,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:35:16,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1549293621] [2020-10-14 17:35:16,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:35:16,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:16,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:18,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:18,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-14 17:35:18,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:18,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1349 [2020-10-14 17:35:18,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:18,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:18,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 17:35:18,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:35:18,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-14 17:35:18,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:20,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:35:20,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:20,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:20,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:20,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:35:20,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:20,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:20,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:20,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:20,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:35:20,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:20,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:35:20,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:20,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 17:35:20,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:20,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:20,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:20,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:20,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:20,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 17:35:20,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:20,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:20,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:35:20,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:20,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:35:20,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:20,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 17:35:20,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:20,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:20,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:20,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:20,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:20,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:20,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:20,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:20,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:20,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:20,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:20,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:20,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 17:35:20,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:20,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:20,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:20,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:20,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:20,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:20,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:20,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:20,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:20,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:20,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:20,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:20,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 17:35:20,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:20,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:20,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:20,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:20,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:20,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:20,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:20,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:20,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:20,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:20,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:20,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:20,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-14 17:35:20,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:20,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:20,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:20,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:20,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:20,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:20,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:20,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:20,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:20,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:20,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:20,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:20,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 17:35:20,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:20,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:20,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:20,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:20,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:20,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:20,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:20,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:20,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:20,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:20,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:20,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:20,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 17:35:20,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:20,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:20,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:20,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:20,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:20,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:20,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:20,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:20,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:20,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:20,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:20,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:20,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 17:35:20,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:20,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:20,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:20,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:20,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:20,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:35:20,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:20,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:20,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:20,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:20,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:20,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:20,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 17:35:20,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:20,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:20,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:20,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:20,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:20,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:20,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:20,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:20,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:20,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:20,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:20,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:20,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 17:35:20,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:20,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:20,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:20,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:20,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:20,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:20,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:20,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:20,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:20,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:20,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:20,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:20,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-14 17:35:20,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:20,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:20,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:20,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:20,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:20,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:20,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:20,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:20,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:20,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:20,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:20,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:20,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-14 17:35:20,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:20,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:20,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:20,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 17:35:20,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:20,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 17:35:20,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:20,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:20,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:35:20,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:35:20,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:35:20,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:20,236 INFO L134 CoverageAnalysis]: Checked inductivity of 584 backedges. 22 proven. 342 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-14 17:35:20,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1549293621] [2020-10-14 17:35:20,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:35:20,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-14 17:35:20,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871383027] [2020-10-14 17:35:20,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-14 17:35:20,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:35:20,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-14 17:35:20,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=929, Unknown=0, NotChecked=0, Total=992 [2020-10-14 17:35:20,237 INFO L87 Difference]: Start difference. First operand 173 states and 186 transitions. Second operand 32 states. [2020-10-14 17:35:22,965 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-10-14 17:35:27,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:35:27,430 INFO L93 Difference]: Finished difference Result 237 states and 263 transitions. [2020-10-14 17:35:27,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-14 17:35:27,432 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 127 [2020-10-14 17:35:27,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:35:27,435 INFO L225 Difference]: With dead ends: 237 [2020-10-14 17:35:27,435 INFO L226 Difference]: Without dead ends: 235 [2020-10-14 17:35:27,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=237, Invalid=3795, Unknown=0, NotChecked=0, Total=4032 [2020-10-14 17:35:27,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-10-14 17:35:27,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 226. [2020-10-14 17:35:27,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-14 17:35:27,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 251 transitions. [2020-10-14 17:35:27,481 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 251 transitions. Word has length 127 [2020-10-14 17:35:27,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:35:27,481 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 251 transitions. [2020-10-14 17:35:27,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-14 17:35:27,481 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 251 transitions. [2020-10-14 17:35:27,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-14 17:35:27,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:35:27,483 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:35:27,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-14 17:35:27,483 INFO L427 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:35:27,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:35:27,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1693957337, now seen corresponding path program 47 times [2020-10-14 17:35:27,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:35:27,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [586299829] [2020-10-14 17:35:27,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:35:27,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:35:27,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:35:28,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:35:28,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-14 17:35:28,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:35:28,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1021 [2020-10-14 17:35:28,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:35:28,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:35:28,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 17:35:28,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 17:35:28,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-14 17:35:28,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 17:35:28,931 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-10-14 17:35:29,079 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2020-10-14 17:35:29,402 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46